MX2014001642A - Process for recovering hydrocarbons from flows resulting from operations of acid and non-acid stimulations in oil wells, from repairs in oil wells and cleaning in oil wells. - Google Patents

Abstract

Described is an in situ process for recovering hydrocarbons from flows resulting or returning from operations of acid and non-acid stimulation of oil wells, operations for repairing oil wells and cleaning oil wells, which is applied in line and recovers the totality of the polluted hydrocarbons and the injected non-polar chemical products, the waiting time is minimum for aligning the well to the production processes and send the treated hydrocarbons to the process; therefore the availability factor in plant is not affected by the stimulation works. The totality of the generated polluted hydrocarbons and the injected non-polar chemical products are recovered and sent to production and commercialization processes. The process of the present invention improves the environment as it avoids polluted hydrocarbons and worn chemical products to be sent to latrine wells.

Description

PROCESS OF RECOVERY OF HYDROCARBONS IN FLOWS RESULTING FROM OPERATIONS OF ACID AND NON-ACID STIMULATIONS OF OIL WELLS, OF REPAIRS OF OIL WELLS AND OF OIL WELL CLEANINGS TECHNICAL FIELD OF THE INVENTION The present invention is related to means and processes for oil well conditioning treatments and more specifically to processes of acid and non-acid stimulation of oil wells to increase the productivity of them.

BACKGROUND OF THE INVENTION In the known art, currently Petróleos Mexicanos (PEMEX), makes many efforts to raise national oil production, applying various methods; among these are the stimulation operations. It is known as prior art, that Petróleos Mexicanos, when an acid or non-acidic stimulation is carried out, is injected at high pressure, different chemical products, in order to apply a deep cleaning and release the obstructions that cause the low production of the well . These chemicals, once they react chemically with the formation, are released to the surface by the same well pressure, the following occurs: 1. - The injected chemicals already spent and contaminated hydrocarbons are received in a two-phase separator, which separates gas and liquid, the gas is recovered and sent to the process to the battery and the obtained liquids, which are a mixture of spent chemicals + contaminated hydrocarbons, are sent to a metal dam and then tank cars are sent for reinjection in a pit latrine. 2. - Once the entire volume of chemical products has been displaced Injected, the contribution of the well of a volume of contaminated hydrocarbons begins, this hydrocarbon can not be sent to the normal process to a dehydration and desalination battery, because it does not have the adjusted physical-chemical parameters: pH = 7 and low level of emulsion . 3. - All the production of hydrocarbons obtained after the stimulation process, is sent to metal dams and then with trucks pipes are sent to its reinjection to the latrine pit. This situation is maintained, until and in a natural way, the physicochemical parameters are adjusted. The process for the well to return to provide uncontaminated hydrocarbon may take several days.

COMMENTS ON THE PREVIOUS ART KNOWN No 1.- In the process currently used by PEMEX, the plant availability factor is reduced, due to the waiting time until the well contributes uncontaminated hydrocarbon, all the production of contaminated hydrocarbons is sent to well latrine, which represents an economic loss and the entire volume of non-polar chemical products used in the stimulation works, under this process, are lost in their entirety. On the other hand, this process represents a high degree of environmental impact, due to the amount of chemical products spent and contaminated hydrocarbons that are sent to the subsoil.

PREVIOUS ART KNOWN No.2.- Schlumberger is an international oil company with operations throughout the world and in Mexico. Looking for a solution to the treatment of returns after the application of an acid stimulation. It presents the following document on its website: Case study: Stimulation with u820 eliminates the use of separators.

During acid stimulation, oil wells with formations mostly dolomitized, with a low percentage of limestone and clays and temperatures above 284 ° F, Schlumberger, proposes the use of the new technology u820. The u820 system has a pH of 4 and when worn inside the matrix it returns as spent fluid with pH greater than 5. As a result, it is indicated that the cleaning times were optimized by eliminating the neutralization of the return fluids, the deferred production decreased and the need for separation equipment dispensed. This technology is applied directly to training, this is at the bottom of the oil well. Not all oil wells are candidates to apply this technology, they must meet the conditions of being carbonate-based formations, with high background temperatures. The results indicate that the pH of the acidic returns is at a level greater than 5.

Comments on prior art known no.2.- For the u820 technology, because it is an intrusive technology, its application is at the bottom of the well, so special conditions of the oil well are required, such as having carbonated formations, having temperatures high background. The pH of the acid return received with the u820 technology is higher than pH = 5, which would represent a risk to get this fluid to be processed in batteries. This technology only applies in case of acid stimulation. 1. - The prior art offers battery alignment times, much longer, because you have to wait for the well to be completely cleaned, that is, the hydrocarbon is not contaminated, to then align with the battery. 2. - During the process of receiving the returns displaced by the well after the stimulation, all the production is sent to metal dams and then to latrine wells, this means many trips of the trucks trucks, increasing therefore the risks of accidents in the road and requiring more operative personnel in well. 3. - All the production generated during the post-stimulation process is sent to the latrine well, this situation is maintained until the contaminated hydrocarbons displaced by the well adjust their physicochemical parameters. 4. - As all the production of contaminated hydrocarbons and spent acids are sent to the latrine well, there is an important environmental impact that can contaminate the aquifers in the subsoil.

The inventors of the present invention develop with a series of experiments, tests and tests that produced A PROCESS OF RECOVERY OF HYDROCARBONS IN FLOWS RESULTING FROM OPERATIONS OF ACID AND NON-ACID STIMULATIONS OF OIL WELLS, OF REPAIRS OF OIL WELLS AND OF OIL WELL CLEANINGS , based on a modality of equipment configuration, which is of great importance in the part of the engineering in which the invention is included.

This is a novel online process that is applied on site during acid and non-acidic stimulations, in oil well repairs and cleaning operations, receiving and treating, all the returns of spent chemical products and contaminated hydrocarbons displaced to the surface, sending them, quickly to battery, for processing and marketing. Through this process, the spent chemical products are separated as polar and non-polar, recovering the non-polar chemical products and reintegrating them to process, to be mixed with the hydrocarbon that is ready for commercialization.

Applicants have developed a process that is applied online and recovers all contaminated hydrocarbons and non-polar chemicals injected, the waiting time is minimal to align the well battery and can send the process to the production of treated hydrocarbons, therefore the factor of plant availability is not affected by the stimulation works. All the contaminated hydrocarbons generated and the non-polar chemicals injected are recovered and sent to the battery for processing and commercialization. The process of the present application contributes to improving the environment, because it avoids the sending of contaminated hydrocarbons and spent chemical products to the latrine well.

The process of the present invention has the following advantages over the prior art: 1. The alignment of the battery operated well is carried out quickly. Starting the production delivery of the well, in a shorter time. This favors raising the plant availability factor. 2. - Transport of truck trucks is reduced. Only congenital water and spent acids are sent to the latrine pit. This prevents accidents on the road and reduces the operational personnel in the operations in the well. 3. - All the production of contaminated hydrocarbons and all non-polar chemical products used in the stimulation process, in repairs operations and in oil well cleaning operations is recovered and with this daily oil production is raised and production is reduced deferred. 4. - As all the volume of contaminated hydrocarbons and spent chemical products are recovered and integrated into the production, protection of the environment is favored, reducing the contamination of the water table.

WHAT IS THE SPECIFIC DIFFERENCE IN EACH TECHNICAL EFFECT? DISADVANTAGES OF PREVIOUS ART 1. - The prior art offers battery alignment times, much longer, because you have to wait for the well to be completely cleaned, that is, the hydrocarbon is not contaminated, to then align with the battery. 2. - During the process of receiving the returns displaced by the well after the operations of acid and non-acid stimulation, of operations of repairs and operations of cleanings of oil wells, all the production is sent to metal dams and then to latrine wells , this means many truck trips, increasing the risks of accidents on the road and requiring more operating personnel in the well. 3. - All the production generated during the post-stimulation process is sent to the latrine well, this situation is maintained until the contaminated hydrocarbons displaced by the well adjust their physicochemical parameters. 4. - As all the production of contaminated hydrocarbons and spent acids are sent to the latrine well, there is an important environmental impact that can contaminate the aquifers in the subsoil.

DIFFERENCES BETWEEN THE PRESENT INVENTION AND THE NEAREST PREVIOUS ART. ADVANTAGES OF THE ART OF THE PRESENT INVENTION 1. - The process of the present invention offers, from a configuration modality of integrated equipment on a mobile platform, the possibility of being able to apply an on-site treatment for the recovery of contaminated hydrocarbons. 2. - Integrates in line, four points of chemical injection and sampling (mixer), for the conditioning of contaminated hydrocarbons. It is also an automated system for pH adjustment. 3. -Integrates in line a water jet injection point for washing the hydrocarbon, solubilizing the acids contained in the fluid and allowing a rapid adjustment of the general pH of the fluid. 4. - Integrates an online recirculation system. The first stage of reception of non-polar chemical products mixed with contaminated hydrocarbons is sent to a metal dam to complement its process of parameter adjustments. The contaminated hydrocarbon flow is adjusted online and sent to the battery. In parallel, the non-polar chemicals already treated are integrated into the flow of the treated hydrocarbons for battery delivery.

WHAT ARE THE TECHNICAL EFFECTS OF THE IDENTIFIED DIFFERENCES? ADVANTAGES OF THE PRESENT INVENTION 1. - The alignment of the battery operated well is done quickly. Starting the production delivery of the well, in a shorter time. This favors raising the plant availability factor. 2. - The process of recovery of hydrocarbons is a mobile process, of superficial application and in line and therefore can be applied to any oil well, for cases of acid or non-acidic stimulation, oil well repairs and cleaning of oil wells. oil wells, heavy and semi-heavy oil treatment (dehydration and desalination), crude treatment with high water cut and recovery of crude from congenital waters. 3. - The mixer used in the hydrocarbon recovery process allows to control the conditioning of the fluid to be treated. It allows to condition the flow for its dehydration and desalination. 4. - The recirculation ring, allows the recovery of spent chemical products, as an oil phase and finally has the opportunity to reinject them and be sent to batteries along with the treated hydrocarbons, for commercialization. 5. - The process offers the appropriate way to apply a flow of clean water and solvents, as the case may be, which allows to apply washes and recover and solubilize specific chemical entities. 6. - All the production of contaminated hydrocarbons and all the non-polar chemical products used in the stimulation process is recovered, with this the daily oil production is increased and the deferred production is reduced. 7. - As all the volume of contaminated hydrocarbons and spent chemical products are recovered and integrated into the production, protection of the environment is favored, reducing the contamination of the water table.

WHAT IS THE SPECIFIC DIFFERENCE IN EACH TECHNICAL EFFECT? ADDITIONAL DISADVANTAGES OF PREVIOUS ART 1. - The prior art offers battery alignment times, much longer, because you have to wait for the well to be completely cleaned, that is, the hydrocarbon is not contaminated, to then align with the battery. This is avoided with our treatment that is carried out in situ and online. 2. - During the process of receiving the returns displaced by the well after of the stimulation, all production is sent to metal dams and then to latrine wells, this means many truck trips, thus increasing the risks of accidents on the road and requiring more operating personnel in the well and more operating costs. This is avoided with our treatment that is carried out in situ and online. 3. - All the production generated during the post-stimulation process is sent to the latrine well; This situation is maintained until the contaminated hydrocarbons displaced by the well adjust their physicochemical parameters. This is avoided with our treatment that is carried out in situ and online. 4. - As all the production of contaminated hydrocarbons and spent acids are sent to the latrine well, there is an important environmental impact that can contaminate the aquifers in the subsoil. This is avoided with our treatment that is carried out in situ and online.

OBJECTIVES OF THE INVENTION It is a principal objective of the present invention to provide a process for the recovery of hydrocarbons in acid and non-acidic stimulation operations of operating oil wells.

It is another object of the present invention to provide a process for the recovery of hydrocarbons in oil well repair operations based on one based on a preferred embodiment of process equipment configuration.

Yet another objective of the present invention is to provide a process for the recovery of hydrocarbons in oil well cleaning operations with a base in a preferred embodiment of process equipment.

It is a further object of the present invention to provide a versatile system for the recovery of hydrocarbons based on a preferred embodiment of process equipment configuration.

BRIEF DESCRIPTION OF THE DRAWINGS For a better understanding of the present invention, this is described based on a preferred embodiment illustrated in the figures that accompany this description and in which: Figure 1 is a conventional view of a step diagram of the hydrocarbon recovery process in operations of acid and non-acid stimulation of oil wells; of oil well repair operations and oil well cleaning operations that are performed based on a preferred embodiment of process equipment configuration.

Figure 2 is a conventional view of the flow chart of the hydrocarbon recovery process in acid and non-acidic stimulation operations of oil wells; of oil well repair operations and oil well cleaning operations that are performed based on a preferred configuration of process equipment, showing the main equipment and some minor details thereof.

PREFERRED MODALITY OF THE INVENTION The present invention is described based on a preferred embodiment in which: It is to be understood that the invention is not limited in its application to the details of the construction and arrangement of the components that are set forth in the host presentation or illustrated in the drawings.

Mention is made, unless otherwise provided, that all technical or scientific terms used in this document have the same meaning as commonly understood by persons skilled in the arts of the invention. The methods and examples provided in this document are illustrative and are not intended to be a limitation.

In a preferred embodiment of the present invention, the applications of the process thus described for the accomplishment of objectives or operations related to acid and non-acidic stimulation operations of oil wells are combined in a single configuration of equipment; of oil well repairs and oil well cleanups. The configuration can be in each case fixed, semi-fixed or mobile; compact or modular.

With reference to Figure 1, the process of recovery of hydrocarbons in acid and non-acidic stimulation operations of oil wells; of oil well repair operations and oil well cleaning operations, is grouped in the following stages: 1 ONLINE RECEPTION OF MIXED WELL RETURNS. .- The process begins with the mechanical interconnection (1) of the equipment with the production pipeline of the well. This process can be applied to any well that has undergone acid or non-acid stimulation work; of oil well repairs and oil well cleaning; this flow will be integrated to the other equipment through pipes. All the equipment, pipes and materials used are H2S-proof. 2 PHYSICAL AND PHYSICAL CONDITIONING. In this stage the physicochemical parameters of the returns are sampled and according to them, the flow of the returns is conditioned by the injection of chemical conditioning products (2-3) and by the injection of clean water (2-1) conditioned thermally. to solubilize the polar compounds and at the same time spent spent chemicals are injected (2-2) in well operations. 3 THERMAL CONDITIONING. In this stage a series heating is carried out which will facilitate the phase separation of the flow thus conditioned. 4 THREE PHASE SEPARATION. In this stage, the phase separation of the mixed and conditioned components of the flow is carried out in a three-phase separator, non-polar oil phase (A), polar aqueous phase (B), gas phase (C). 5 CONTROL OF PROCESS PARAMETERS (IN RETURN ENTRY (5-1), PROCESS STAGES AND OUTPUT OF PROCESSED FLOWS). All stages of operations of the process are monitored and controlled electronically, automated, and include sampling, control of process parameters and correction of them, operating the operation of the components and equipment to make the actions of correction of the parameters of process in the lines and equipment, in order to control the efficiency of the process and the quality of the products, in benefit of the recovery of the inputs and products and of the protection to the environment. 6 RECIRCULATION TO TREATMENT. This stage of the process closes the circle of forecasts and measures of process control in all its stages to avoid the waste of inputs and products thereof and further increase the economic efficiency and the environmental benefits granted by the process, through the previous stage of control of process parameters.

With reference to Figure 2, we have to: 1. - The process begins with the mechanical interconnection (1) of the equipment with the production pipeline of the well. This process can be applied to any well that has undergone acid or non-acid stimulation work, for dehydration and desalination of heavy and semi-heavy hydrocarbons and in the treatment of hydrocarbon streams with high water content and recovery of crude oil. from congenital waters. This process is designed to withstand wells with head pressures of 3,000 to 5,000 psig. From this point, the process will receive all the returns of spent chemical products and contaminated hydrocarbons; this flow will be integrated to the other equipment through pipes. All the equipment, pipes and materials used are H2S-proof. 2. - Immediately after the interconnection pipe with the well, there is a safety valve (2) calibrated at 5000 psig, pneumatically operated with nitrogen gas, which closes automatically; in case of overpressure of the well to the process, the response time for the closing of this safety valve in case of emergency is 3 seconds. 3. - This process pipe that is interconnected with the production output of the well, is interconnected with a pipe network to a mixer (3) composed of injection ports that have four ½ "inlets, controlled by ½" needle valves. diameter and support of 5000 psig of pressure In this mixer, the following points are enabled: 3a) exit point for the sample taking of the fluid that comes from the well, this allows to characterize the fluid that is displacing the well, if it is hydrocarbon or chemical product or a mixture of the two, and measurement of physicochemical parameters. 3b) A point for the injection of the neutralizing chemical. Here a train of chemical injection pumps (5-2), which has the ability to inject from 10 ppm to 1000 ppm, is interconnected, the concentration levels of neutralizing chemical will depend on the pH of the fluid in the product. water well. At this point an automated pH meter (6) is installed, which by means of a 4-20 mamp signal. an electro-actuated valve is controlled, which adjusts the injection volumes until reaching a pH = 7. 3c) A point for the injection of the emulsion breaker chemical, in such a way that the de-emulsification process (5) is initiated, this to adjust the levels of natural emulsion in the well fluid. 3d) a point for future applications 4. - The mixer (3), interconnects with process pipe to a choke manifolds (4) of 2"variable opening, integrated by two lateral chokes of 1" full opening and 2"male valves. This choke manifolds (4) allows the delivery of the well flow through either end and allows the injection of fluids at the upper ends, with inputs to 2". At this point the pressure is controlled in the entire process line and prevents over-pressure from reaching the upstream equipment. This choke manifolds (4) has a pressure support of 15,000 psig. 5. - At the 2"upper right entrance of the choke manifolds (4), 2" pipe coming from a metal dam (8) filled with clean water (8) is interconnected. Through this 2"pipe and with a control valve (7), a stream of clean water is injected into the choke manifolds that impacts the fluid coming from the well. The volumetric ratio of injected water is 0.5 barrel of water for every 5 barrels of well fluid. At this point the polar chemicals (spent acids) dissolve in the injected water and non-polar chemicals are maintained in the oil phase. This stage, which can be considered as washing with clean water, contributes significantly to the recovery of non-polar chemical products and their integration into the hydrocarbon flow and to a rapid adjustment of the pH in the free water of the treated hydrocarbons. 6.- In the choke manifolds (4), the fluid is dissolved and the neutralizing chemicals and the emulsion breaker react. Then, the choke manifolds (4) is interconnected with a diagonal process pipe that includes temperature and pressure measurement points. Immediately, all the fluid coming from the choke manifolds (4), is sent to a set of two line heaters (9), these heaters can use natural gas or propane gas as fuel, they have a total heat capacity of 1, 000,000 of btu. This stage is known as the conditioning stage. The heating at temperatures between 85 ° c and 100 ° c, The residence time of the fluid inside the line heater (9) is favored, because the heaters (9) are composed of 2"pipes in wavy form, the flow first enters a line heater (9) and then from a pipe arrangement enters the other line heater (9) to finish the heating process. 7. - With the flow already conditioned with temperature and the addition of neutralizers and emulsion breakers, the heating system is interconnected with the three-phase separating equipment (10), to send the conditioned flow. In the three-phase separator (10), the flow enters to develop the hydrocarbon-gas-water separation. The separated gas is recovered and sent to battery (11). To the separated hydrocarbon, the pH and emulsion levels are measured online, if it complies with the required parameters, it is sent to battery (17), otherwise it is recirculated (16) and returned to process (14). The recovered water contains all the neutralized spent acids (acid stimulation), is sent to metal prey (13) for reinventing it in POZO latrine. They have equipment electronic system for measuring the volume of recovered gas, hydrocarbon and recovered water.

This recirculation (16) of fluids in the process of treatment of the returns of acid and non-acid stimulation operations, of repairs and cleanings of oil wells, based on a configuration modality of equipment, works as follows: 7. 1.- Reception and treatment of spent chemical products. After applying the stimulation process, the oil well initiates the displacement of the spent chemical products. This volume of spent chemical products, begins its entry to the team. To these spent chemical products are injected with chemicals to modify their physicochemical parameters, this conditions and improves their separation process. Then, this conditioning fluid enters the three-phase separator (10). The separated oil phase is sent to the process tank (14), to complement its conditioning. 7. 2.- Reception and treatment of contaminated hydrocarbons. When the oil well finishes displacing the spent chemical products, the natural contribution of the oil well begins. The hydrocarbon received is contaminated and under this condition the process is entered online; the chemical and mechanical actions are applied to condition the flow. The first volume of contaminated hydrocarbon, which does not meet the control parameters, is sent to the process tank (14). The control parameters are adjusted and all the production of hydrocarbons already treated and conditioned by battery is sent (not shown), this is a process for its subsequent commercialization. 7. 3.- Recirculation (16) of the spent chemical products process tank (14). At the same time that the treated hydrocarbon is sent to a battery (not shown), the spent chemicals (oil phase received from the three-phase separator) are recirculated to the process, driven by the pump (15) and controlled by the control valve (7), this results in that the entire oil phase (spent non-polar chemical products), are sent to the battery together with the treated hydrocarbons.

The recovered water contains all the neutralized spent acids (stimulation acid), is sent to metal prey (not shown) for reinventing it in a latrine WELL (not shown). Electronic equipment (not shown) is available for measuring the volume of gas recovered, the liquid hydrocarbon and the recovered water.

The recirculation ring (16) has a third heat treatment unit (21) for the flow of water from the metal dam (8), placed between it and the choke manifolds (4), prior to the in-line heaters ( 9), with the objective of thermally conditioning the water and improving the efficiency of washing the flow of the well returns that takes place in the choke manifolds (4) and the recovered water (13) contains all the neutralized spent acids (acid stimulation). ), is sent to a metal dam (not shown) for reinjection in the pit latrine (not shown), all operations controlled by electronic equipment (not shown) for the measurement of the volume of gas recovered (11), of the liquid hydrocarbon (12) and recovered water (13).

It will be evident to those skilled in the art, that innumerable modifications to the present invention can be made without deviating from the spirit and scope thereof, so that it should be considered in its broadest and non-limiting sense.

NOVELTY OF THE INVENTION Having thus described the invention, it is considered as a novelty and, therefore, the content of the following is claimed in property.

Claims (10)

1 On-site process for recovering hydrocarbons from the resulting flows or returns from acid and non-acid stimulation operations of oil wells, oil well repair operations and oil well cleanups; characterized by being integrated by the following main stages: in-line reception of effluent flow returns resulting from acid stimulation operations of oil wells, oil well repairs and oil well cleanings; automated control of physicochemical process parameters in reception, conditioning, treatment and recirculation of the inflows and outflows of the recovery process; physicochemical conditioning of returns; online thermal conditioning; and three-phase separation with recirculation of deficient or spent fluids to the process; the configuration of the equipment comprising the stages can be fixed, semi-stationary or mobile: compact or modular.

2. - On-site process for the recovery of hydrocarbons from the resulting flows or returns from acid and non-acid stimulation operations of oil wells, oil well repair operations and oil well cleanups; according to claim 1, characterized in that all its stages: receipt of returns in plant, physicochemical and thermal conditioning of the returns, three-phase separation of products, recirculation to the process of deficient or spent chemical products and final conditioning of recovered products, are controlled automated and include the sampling, the control of process parameters and the correction of them by corrective actions in the lines and equipment of the process.

3. - On-site process for the recovery of hydrocarbons from the resulting flows or returns from acid and non-acid stimulation operations of oil wells, oil well repair operations and oil well cleanups; according to claim 1, characterized in that the step of receiving in line of mixed flow returns resulting from acid stimulation operations of oil wells, repairs of oil wells and oil well cleaning; stage consisting of the connection of a reception line connected to the mouth of the oil well and of the pumping of the returns to a mixer provided with four entrances that controls the stage of physicochemical conditioning of the received influent.

4. - On-site process for the recovery of hydrocarbons from the resulting flows or returns from acid and non-acid stimulation operations of oil wells, oil well repair operations and oil well cleanups; according to claims 1 and 2, characterized in that in the stage of the physical-chemical conditioning of the returns, they are applied to these the chemical and mechanical actions to condition the flow; the first volume of contaminated hydrocarbon, which does not comply with the input control parameters, is sent to the processing tank for its conditioning where the control parameters are adjusted and all the production of hydrocarbons already treated and conditioned by battery is sent, that is, to process for later commercialization.

5. - On-site process for the recovery of hydrocarbons from the resulting flows or returns from acid and non-acid stimulation operations of oil wells, oil well repair operations and oil well cleanups; according to claims 1, 2, 3 and 4, characterized in that in the step of physicochemical conditioning of the returns, when the oil well ends displace the spent chemical products, the natural contribution of the oil well begins, the contribution is sent online to a mixer, in charge of the main operations of the stage, which is integrated by a hollow body provided with four ports, which are four ½ "inlets, controlled by ½" diameter needle valves and 5000 psig pressure support. The mixer used in the hydrocarbon recovery process allows to control the conditioning of the fluid to be treated. In this mixer, the following points are enabled: a) exit point for the sampling of the fluid coming from the well, this allows to characterize the fluid that is displacing the well, whether it is hydrocarbon or chemical product or a mixture of the two, and measurement of the physicochemical parameters of entry to the well. process. b) a point for the injection of the neutralizing chemical. Here a train of chemical injection pumps is interconnected, which has the capacity to inject from 10 ppm to 1000 ppm; the concentration levels of neutralizing chemical to be injected will depend on the pH of the well fluid. At this point, an automated pH meter is installed, which uses a 4-20 mamp signal to control an electro-actuated valve, which adjusts the injection volumes until a pH = 7 is reached. c) A point for the injection of the emulsion breaker chemical, in such a way that the demulsification process begins, this to adjust the levels of natural emulsion that are in the well fluid, conditioning it primarily for its later separation, d) a point for future applications.

6. - On-site process for the recovery of hydrocarbons from the resulting flows or returns from acid and non-acid stimulation operations of oil wells, oil well repair operations and oil well cleanups; according to claims 4 and 5, characterized in that in the stage of physicochemical conditioning of the returns, they are applied a flow of clean water that allows to apply washes and recover and solubilize specific chemical entities of polar character (neutralizing chemical products), by injecting a stream of clean water into a choke manifolds that receives in line with the mixer, the flow of returns from it, previously conditioned by injection of conditioning chemicals.

7. - On-site process for the recovery of hydrocarbons from the resulting flows or returns from acid and non-acid stimulation operations of oil wells, oil well repair operations and oil well cleanups; according to claims 4, 5, and 6, characterized in that the step of the physicochemical conditioning of the returns is followed by a thermal conditioning stage, consisting of providing heat energy to the flow of the returns previously conditioned and with regulated and monitored pH , coming from the choke manifolds, entering two heaters connected in line, to facilitate its processing in an in-line three-phase separator.

8. - On-site process for the recovery of hydrocarbons from the resulting flows or returns from acid and non-acid stimulation operations of oil wells, oil well repair operations and oil well cleanups; characterized by a fourth stage of phase separation of the returns physicochemically and thermally conditioned, which are channeled from in-line heaters to a three-phase separator that produces the recovery of a first gaseous phase of hydrocarbons, a second aqueous phase containing polar chemicals and a third oil phase containing recovered hydrocarbons and chemicals not polar.

9. - On-site process for recovering hydrocarbons from the resulting flows or returns from acid and non-acidic stimulation operations of oil wells, oil well repair operations and oil well cleanings, in accordance with claims 2 and 8; characterized by having a recirculation ring, which allows the recovery of spent chemicals, as an oil phase and that finally has the opportunity to reinject them to the process and to be sent processed and recovered, to batteries along with the treated hydrocarbons , for marketing; ring in which the recirculation of the spent chemical products in and out of the process tank, allows that, at the same time that the treated hydrocarbon is sent to the battery, the spent chemicals (oil phase received from the three-phase separator), are recirculated towards the process to be conditioned, driven by a pump and controlled by a control valve, resulting in the entire oil phase (spent non-polar chemical products) being sent to the battery together with the treated hydrocarbons.

10. - On-site process for recovering hydrocarbons from resulting flows or returns from acid and non-acidic stimulation operations of oil wells, oil well repair operations and oil well cleanings, in accordance with claims 2 and 9, characterized by counting in the ring recirculation with a third heat treatment unit for the flow of water from the metal dam, placed between it and the choke manifolds, prior to the heaters in line, with the objective of thermally conditioning the water and improving the efficiency of the flow washing of the well returns that takes place in the choke manifolds and the recovered water contains all the neutralized spent acids (acid stimulation), it is sent to metal prey for reinjection in the latrine well, all operations controlled by electronic equipment for volume measurement of recovered gas, liquid hydrocarbon and recovered water.