CN201236701Y - Multifunctional combined logging instrument for petroleum exploration - Google Patents

Abstract

The utility model relates to a multifunctional combined well logging instrument used for drilling and detection in the field of exploration. A bridle is arranged at the upper end and a bottom nose is arranged at the lower end. Multiple probes and electronic circuits are arranged between the bridle and the bottom nose. And matching sub-sections, the probes include auxiliary measurement probes, telemetry/gamma sub-sections, natural gamma-ray spectrum probes, compensated neutron probes, lithology density-microsphere probes, continuous inclinometer probes, high-resolution acoustic waves Well logging tool probe, dual laterolog tool probe, dual induction logging tool probe and four-arm independent caliper, etc.; the combined logging tool also includes a first shared electronic circuit and a second shared electronic circuit for connecting The lines of each probe and the functions of detecting data acquisition and transmission are completed. The utility model integrates a variety of probes, can measure and collect various data in one trip, reduces the measurement time, and improves the accuracy of the measurement and data collection.

Description

Oil exploration multifunctional combination logging tool

technical field

The utility model relates to equipment in the field of exploration, in particular to a multifunctional well logging equipment in the aspect of drilling and detection.

Background technique

Geophysical logging uses the theory of physics and electrochemistry and new science and technology to measure various physical parameters of various media at different depths underground, so as to make comprehensive geological interpretations and determine oil and gas and other mineral reserves and geological structures.

In terms of survey equipment, due to the need to measure many downhole physical parameters such as rock conductivity, rock electrochemical properties, rock elasticity, and rock nuclear physical properties, it is necessary to rely on probes with multiple functions to go downhole for measurement. Corresponding lines are used for signal transmission and processing. Therefore, in order to obtain the logging data of all conventional curves, it is necessary to go downhole at least four times, that is, put the acoustic probe string, microsphere lateral probe string, radioactive probe string Caliper and other auxiliary probe strings are used for measurement, which not only greatly takes up the logging time, but also increases the cost of the drilling company and increases the risk of logging; in addition, because the logging tool is a cylinder, the inner wall of the well There are often irregular inner walls with non-straight sections. In this case, accidents when the instrument is blocked or stuck often occur, which may easily lead to damage to the instrument or inaccurate information obtained, resulting in misinterpretation, missing oil layers or gas layers, Losses to oil exploration.

Contents of the invention

The purpose of this utility model is to solve the above problems, to provide a kind of probe that can be integrated in one body without affecting the electronic circuit of each probe and the connection of related equipment; at the same time, it can adapt to the inner wall of the irregular well, and can measure the conventional naked hole in one time. It is a multifunctional combination logging tool for petroleum exploration with various data of wells and cased hole acoustic, magnetic and emission.

The technical solution adopted by the utility model is: a multi-functional combination logging instrument for petroleum exploration, a bridle is arranged at the upper end of the logging instrument, a bottom nose is arranged at the lower end, and multiple shafts are installed between the bridle and the bottom nose. A probe, an electronic circuit and a supporting short joint, the oil exploration multi-function combined logging instrument includes an auxiliary measuring probe, a telemetry/gamma short joint, a natural gamma energy spectrum probe, a compensation middle Sub-probe, lithology density-microsphere composite probe, continuous inclinometer probe, high-resolution acoustic logging tool probe, hydraulic pusher and two flexible sub-joints; also includes the first shared electronic circuit sub-joint and the second Two shared electronic circuit short joints, used to connect the lines of each probe and complete the detection data collection and transmission functions; where:

The upper end of the auxiliary measurement probe is socketed with the bridle, the lower end is socketed with the upper end of the telemetry/gamma short joint, the lower end of the telemetry/gamma short joint is socketed with a flexible short joint, and the lower end of the flexible short joint is connected with the natural gamma joint. The upper end of the magma energy spectrum probe is socketed, the lower end of the natural gamma energy spectrum probe is socketed with the upper end of the compensation neutron probe, the lower end of the compensation neutron probe is socketed with the first shared electronic circuit nipple, and the hydraulic pusher The upper end of the first shared electronic circuit short joint is socketed, the lower end is socketed with another flexible short joint, the lower end of the flexible short joint is socketed with the continuous inclinometer probe, and the lower end of the continuous inclinometer probe is connected with the second shared electronic circuit The short section of the line is connected, the second shared electronic circuit short section is socketed with the probe of the high-resolution acoustic logging tool, and the probe of the high-resolution acoustic logging tool is socketed with the bottom nose at the lower end;

The lithology density-microsphere composite probe is installed on the hydraulic pusher;

A centralizer is installed on the outer wall of the probe of the high-resolution acoustic logging tool.

Further, the utility model oil exploration multi-functional combination logging tool can be connected with an insulating short joint between the lower end of the flexible joint and the probe of the continuous inclinometer. Between the well tool probes, a pair of lateral logging tool probes are socketed, and centralizers are installed on the probes; an insulating pup joint and four-arm independent well are installed between the high-resolution acoustic logging tool probes and the bottom nose. Diameter.

Further, the oil exploration multifunctional combination logging instrument of the utility model can also be equipped with a four-arm independent caliper at the upper end of the continuous inclinometer probe; Connect a pair of induction logging tool probes, and centralizers are installed on the probes.

According to the above-mentioned technical scheme, the utility model has the conventional measurement function of measuring open hole and the partial measurement function of cased well; the control of natural gamma ray spectrum probe, compensated neutron probe, lithology density-microsphere composite probe and hydraulic pusher , signal processing and communication circuits are integrated and designed on the first shared electronic circuit; the control and signal The integrated processing and communication circuits are designed on the second shared electronic circuit; the lithology density-microsphere composite probe is installed on the hydraulic pusher; the continuous inclinometer probe is combined with the second shared electronic circuit socket, and the Its casing is designed as the upper electrode of the double lateral logging probe and is isolated from the casings of other probes by an insulating short joint. The casing of the four-arm caliper is isolated; the combined tool also has newly designed hard electrodes, CCL, auxiliary measuring probes, independent four-arm caliper, flexible sub, etc., so that the combined tool can work normally in logging and complete other functions .

The beneficial effects of the utility model are:

1. The utility model integrates a variety of probes, each probe is set in a certain order, and the mechanical connection mode is consistent, which can realize the purpose of one-time downhole measurement and collection of multiple data, reduce measurement time and improve accuracy.

2. The added flexible nipple can help the logging tool to be lowered smoothly in the irregular shaft and horizontal shaft, so as to meet the needs of complex shaft measurement.

Description of drawings

The utility model will be further described below in conjunction with the embodiments of the utility model and the accompanying drawings of the oil exploration multifunctional combined logging instrument.

Fig. 1 is a schematic diagram of the overall structure of an embodiment of the utility model.

Fig. 2 is a schematic diagram of the overall structure of another embodiment of the present invention.

Fig. 3 is a structural schematic diagram of the upper part of the probe of the utility model.

Fig. 4 is a structural schematic diagram of the lower part of the probe of the present invention.

Fig. 5 is a structural schematic diagram of the utility model when two probes are connected.

In the figure: 1. Bridle, 2. Bottom nose, 3. Hydraulic pusher, 4. Centralizer, 5. Auxiliary measurement probe, 6. Telemetry/gamma nipple, 7. Natural gamma spectrum probe, 8 .Compensated neutron probe, 9. Lithology density-microsphere composite probe, 10. Continuous inclinometer probe, 11. High-resolution acoustic logging tool probe, 12. First shared electronic circuit sub-section, 13. Second Shared electronic circuit nipple, 14. Flexible nipple, 15. Dual laterolog probe, 16. Dual induction logging probe, 17. Eccentric, 18. Sliding shoe, 19. Electrical socket, 20 .locating pin, 21. jack, 22. housing, 23. threaded ring, 24. groove, 25. open ring, 26. open ring pad, 27. snap ring, 28. 45° bevel, 29. positioning groove, 30 .Electrical connection pin seat, 31. Tongue pin, 32. Thrust pin, 33. Pin groove, 34. Pin, 35. Internal thread, 36.45° chamfer, 37. Sealing ring, 38. Four-arm independent well diameter Instrument, 39. Insulation pup.

Detailed ways

Please refer to Fig. 1 and Fig. 2 for the structure of the oil exploration multifunctional comprehensive logging instrument provided by the utility model. The upper end of the comprehensive logging instrument is provided with a bridle 1, and the lower end is provided with a bottom nose 2. There are multiple probes, electronic circuits and supporting sub-joints installed in the room, including auxiliary measurement probe 5, telemetry/gamma sub-joint 6, natural gamma energy spectrum probe 7, compensation neutron probe 8, lithology density-microsphere composite Probe 9, continuous inclinometer probe 10, high-resolution acoustic logging tool probe 11, hydraulic pusher 3 and two flexible sub-joints 14; the first shared electronic circuit sub-joint 12 and the second shared electronic circuit sub-joint 13 It is used to connect the lines of each probe, and complete the detection data collection and transmission functions; the probes and pup joints are sequentially socketed together in the way that the lower end of the previous probe is socketed with the upper end of the next probe. Specifically:

The upper end of the auxiliary measurement probe 5 is socketed with the bridle 1, the lower end is socketed with the upper end of the telemetry/gamma short joint 6, and the lower end of the telemetry/gamma short joint is socketed with a flexible short joint 14, and the lower end of the flexible short joint is connected with the The upper end of the natural gamma energy spectrum probe 7 is socketed, the lower end of the natural gamma energy spectrum probe is socketed with the upper end of the compensation neutron probe 8, the lower end of the compensation neutron probe is socketed with the first shared electronic circuit nipple 12, and the hydraulic pressure The upper end of the pusher 3 is socketed on the first shared electronic circuit short joint 12, and the lower end is socketed on another flexible short joint 14. The lower end of the flexible short joint is socketed on the continuous inclinometer probe 10, and the continuous inclinometer probe The lower end is socketed with the second shared electronic circuit nipple 13, the second shared electronic circuit nipple is socketed with the high-resolution acoustic logging tool probe 11, and the high-resolution acoustic logging tool probe is socketed with the bottom nose 2 at the lower end The lithology density-microsphere composite probe 9 is installed on the hydraulic pusher 3; the centralizer 4 is installed on the outer wall of the probe 11 of the high-resolution acoustic logging instrument.

The probe part of the utility model also includes a hard electrode and a CCL.

In one embodiment of the utility model shown in Fig. 1, an insulating short joint 39 is sleeved between the lower end of the flexible joint and the probe of the continuous inclinometer, and between the probe 11 of the high-resolution acoustic logging instrument and the bottom nose An insulating short joint 39 is also socketed between them, and a four-arm independent caliper 38 is socketed; between the second common electronic circuit short joint 13 and the high-resolution acoustic logging tool probe 11, a double-sided To the logging instrument probe 15, and the centralizer 4 is installed on the probe. The connection sequence is as follows: horse tap 1, hard electrode, CCL, auxiliary measurement probe 5, telemetry/gamma sub-section 6, flexible sub-section 14, natural gamma spectrum probe 7, compensated neutron probe 8, first common electronic Line 12, hydraulic pusher 3 (with lithology density-microsphere composite probe 9), flexible sub-joint 14, insulating sub-joint 39, continuous inclinometer probe 10, second common electronic circuit 13, double laterolog Instrument probe 15, high-resolution acoustic wave probe 11, insulating short joint 39, four-arm independent caliper 38, and bottom nose 2.

In another embodiment of the utility model shown in Fig. 2, a four-arm independent caliper 38 is installed on the upper end of the continuous inclinometer probe 10, A pair of induction logging tool probes 16 are socketed between them, and centralizers 4 are installed on the probes. The connection sequence is as follows: horse tap 1, hard electrode, CCL, auxiliary measurement probe 5, telemetry/gamma sub-section 6, flexible sub-section 14, natural gamma spectrum probe 7, compensated neutron probe 8, first common electronic Line 12, hydraulic pusher 3 (with lithology density-microsphere composite probe 9), flexible sub-joint 14, four-arm independent caliper 38, continuous inclinometer probe 10, second shared electronic circuit 13, high-resolution Rate acoustic wave probe 11, double induction logging instrument probe 16, bottom nose 2.

The above two embodiments have shown two socket combination modes of the present invention. Among them, the first shared electronic circuit short joint 12 is the data processing center and communication control center of the radioactive instrument and the microsphere instrument in the utility model, and it completes gamma energy spectrum, compensated neutron, lithology density, microsphere focused logging Instrument data acquisition, real-time control of each probe and realization of push-retraction control of the hydraulic pusher 3. The second shared electronic circuit short section 13 includes shared electronic circuits of dual laterologging tool probes 15, dual induction logging tool probes 16, continuous inclinometer probes 10, and high-resolution acoustic logging tool probes 11, responsible for the above The control of each probe and the transmission of logging data, the demodulation of commands issued by the ground, the control of the calibration status of dual lateral and dual sensing, and the gain control of the probe 11 of the high-resolution acoustic logging tool; The logging data of the probe 10 and the dual induction logging tool probe 16 are collected and transmitted; the power control of the transmitted signal of the dual laterolog tool probe 15 is performed, and the logging signal is amplified, filtered, detected, collected, and transmitted.

The function of the centralizer 4 in the utility model is to support the inner wall of the well when the detector goes down to the well for testing, and the probe installed with the centralizer 4 can be relatively centered in the well, and will not lean too much or even lean against the well wall on one side On a certain side well wall; and the effect of the four-arm independent caliper 38 is to still rely on its independent four arms to lean against the rock wall in irregular wells to detect.

Two flexible sub-sections 14 installed between the telemetry/gamma sub-section 6 and the natural gamma-ray spectrum probe 7, and between the hydraulic pusher 3 and the continuous inclinometer probe 10 are used in horizontal wells without The downhole testing instrument for regular wells (with curved non-straight sections) enables the downhole testing instrument to bend in any direction, so that it can smoothly move up and down in the well and complete the downhole testing task. The flexible short joint 14 not only plays the role of mechanical connection between the two probes, but also completes the function of electrical connection, so that the electrical signals, data and instructions of the two probes are smooth. At the same time, the sealing requirements must be met so that the mud pressure in the formation will not enter the testing instrument.

In the embodiment of the present utility model, a bow-shaped eccentric 17 is installed on one side of the outer wall of the compensating neutron probe 8, and the two ends of the eccentric 17 pass through two sliding shoes 18 arranged on the outer wall of the compensating neutron probe 8 and the compensating The neutron probes are connected in 8 phases. After the tester goes downhole, the bow-shaped eccentric 17 can be supported on the inner wall of the well, and the compensating neutron probe 8 can be pushed against the inner wall of the well on the other side. The joint 14 can ensure that the natural gamma ray spectrum probe 7 and the compensated neutron probe 8 are close to the well wall as much as possible; while the probe parts other than the two flexible short joints 14 are not pushed by the eccentric 14 At the same time, the hydraulic pusher 3 pushes the lithology density-microsphere composite probe 9 against the inner wall of one side of the shaft to complete the detection task.

In the utility model, the connection structure of the upper and lower ends of each probe shell is consistent to ensure that the probes can be connected smoothly; the structure is: the upper end of each probe is provided with an electrical connection jack seat 19, and the electrical connection jack seat 19 is fixed on the upper end of the probe shell 22 through a positioning pin 20; 31 sockets 21 are arranged on the electrical connection jack seat 19; the outer wall diameter of the upper end of each probe shell 22 is smaller than that of other parts of the shell, and the diameter of the outer wall is smaller than that of other parts of the shell. The upper end forms a step, and the threaded ring 23 is sleeved on the upper shell 22 of the probe and stands against the step; at the same time, there is a circle of grooves 24 on the outer wall of the smaller diameter of the upper shell 22 of the probe, an open ring 25 and its The split ring pad 26 and snap ring 27 used in conjunction are installed in the groove 24, and the rear end of the split ring 25 has a protruding part adapted to the shape of the space formed after contacting the threaded ring 23 and the groove 24; the split ring 25 and the open ring pad 26 and snap ring 27 fix the threaded ring on the upper end of the instrument housing 22; the front end of the open ring 25 is a circle of 45 ° slope 28; the outer wall of the probe housing 22 front end has a positioning groove 29; at the same time, each The inner lower part of each probe is provided with an electrical connection pin seat 30, and the electrical connection pin seat 30 includes a tongue-shaped pin 31 whose position and shape are compatible with the positioning groove 29 on the outer wall of the front end of the probe housing 22. , There is a protruding thrust pin 32 on the tongue pin 31, and the thrust pin 32 springs into the pin groove 33 on the inner wall of the probe, so as to fix the electrical connection socket 30. There are 31 pins 34 arranged on the electrical connection pin socket. The diameter of the inner wall at the lower end of the probe housing 22 is greater than the diameter of the middle inner wall, and is compatible with the diameter of the threaded ring 23 on the upper part of the probe, and its lower end is provided with an internal thread 35, which can be screwed with the threaded ring 23 on the upper part of the probe.

In the embodiment of the present invention, there is a 45° chamfer 36 between the inner wall section of the lower end of the probe housing 22 and the internal thread 35 , and the 45° chamfer 36 and the 45° slope 28 at the front end of the open ring 25 can be closely attached together.

When using the utility model, the socket combination of two adjacent probes is as follows: the upper end of the lower probe is inserted into the lower end of the upper probe, wherein the open ring 25, the open ring pad 26 and the snap ring 27 are nested in the groove 24 , and at the same time withstand the threaded ring 23 below it, and fix the threaded ring 23 to prevent the threaded ring 23 from being pulled off from the shell 22; Together, so as to realize the socketing of the upper and lower probes, the threaded ring 23, the open ring 25, and the open ring pad 26 bear the axial tension between the probes, ensuring that the upper and lower probe shells connected together will not be pulled apart.

In the upper probe, the electrical connection pin seat 30 pops into the pin groove 33 through the thrust pin 32 on the tongue pin 31, and the electrical connection pin seat 30 is fixed in the upper probe, while limiting the electrical connection pin seat 30. Rotational freedom on housing 22 .

The electric appliance connection socket seat 19 in the probe below passes through the positioning pin 20, limiting the degree of freedom of rotation of the electric appliance connection socket seat 19 on the shell 22. When the upper and lower probes are socketed, the tongue pin 31 at the middle and lower part of the upper probe is inserted into the positioning groove 29 at the front end of the lower probe. When connecting, the insertion of the tongue-shaped pin 31 and the positioning groove 29 has just played a guiding role, thereby ensuring that the pin 34 on the electrical appliance connection pin seat 30 and the jack 21 on the electrical appliance connection socket seat 19 are accurately positioned at the same time. Plug in one to complete the line connection.

In the embodiment of the present utility model, no less than one set of sealing rings 37 is provided on the upper outer wall of the probe housing 22 and the part before the groove 24 . This design enables sealing between the shells of the upper and lower probes through the sealing ring 37 to prevent external high pressure from entering the probe.

The utility model integrates a variety of probes into one multifunctional comprehensive logging instrument for petroleum exploration, which can realize the purpose of one-time downhole measurement and collection of various data, reduce the measurement time, and improve the accuracy of measurement and data collection; at the same time, the increased flexible sub It can help the logging tool to go down smoothly in the irregular well, so as to meet the needs of complex well measurement.

Claims (6)

1. A multi-functional combination logging tool for petroleum exploration. A bridle is arranged at the upper end of the logging tool, a bottom nose is arranged at the lower end, and a plurality of probes, electronic circuits and supporting shorts are installed between the bridle and the bottom nose. section, characterized by: Between the bridle and the bottom nose of the oil exploration multi-function combined logging instrument, there are auxiliary measurement probes, telemetry/gamma sub-joints, natural gamma energy spectrum probes, compensated neutron probes, lithology density-microsphere composite Probe, continuous inclinometer probe, high-resolution acoustic logging tool probe, hydraulic pusher and two flexible sub-sections; also includes a first common electronic circuit sub-section and a second common electronic circuit sub-section for connecting The wiring of each probe and the completion of detection data collection and transmission functions; where: The upper end of the auxiliary measurement probe is socketed with the bridle, the lower end is socketed with the upper end of the telemetry/gamma short joint, the lower end of the telemetry/gamma short joint is socketed with a flexible short joint, and the lower end of the flexible short joint is connected with the natural gamma joint. The upper end of the magma energy spectrum probe is socketed, the lower end of the natural gamma energy spectrum probe is socketed with the upper end of the compensation neutron probe, the lower end of the compensation neutron probe is socketed with the first shared electronic circuit nipple, and the hydraulic pusher The upper end of the first shared electronic circuit short joint is socketed, the lower end is socketed with another flexible short joint, the lower end of the flexible short joint is socketed with the continuous inclinometer probe, and the lower end of the continuous inclinometer probe is connected with the second shared electronic circuit The short section of the line is connected, the second shared electronic circuit short section is socketed with the probe of the high-resolution acoustic logging tool, and the probe of the high-resolution acoustic logging tool is socketed with the bottom nose at the lower end; The lithology density-microsphere composite probe is installed on the hydraulic pusher; A centralizer is installed on the outer wall of the probe of the high-resolution acoustic logging tool. 2. The oil exploration multifunctional combination logging tool according to claim 1, characterized in that: an insulating short joint is socketed between the lower end of the flexible joint and the probe of the continuous inclinometer, and the second shared electronic circuit short Between the high-resolution acoustic logging tool probe and the high-resolution acoustic logging tool probe, a double lateral logging tool probe is sleeved, and a centralizer is installed on the probe; an insulating Subsection and four-arm stand-alone caliper. 3. The oil exploration multifunctional combination logging tool according to claim 1, characterized in that: a four-arm independent caliper is housed on the upper end of the continuous inclinometer probe; A pair of induction logging tool probes are socketed between the bottom noses, and centralizers are installed on the probes. 4. The oil exploration multifunctional combination logging tool according to claim 1, characterized in that: a bow-shaped eccentric is installed on one side of the outer wall of the compensation neutron probe, and the two ends of the eccentric are arranged on the compensation neutron Two sliding shoes on the outer wall of the probe are connected with the compensating neutron probe. 5. The oil exploration multifunctional combination logging tool according to any one of claims 1 to 4, characterized in that: The upper end of each probe is provided with an electrical connection socket, and the electrical connection socket is fixed on the upper end of the probe shell through a positioning pin; 31 jacks are arranged on the electrical connection socket; The outer wall section of each probe shell is stepped, wherein the upper shell section of the probe is thinner, a threaded ring is set on the upper shell of the probe, and stands on the step, and there is a circle on the outer wall of the upper shell of the probe. Groove, an open ring and an open ring pad and snap ring used in conjunction with it are arranged in the groove, and the rear end of the open ring has a protruding part adapted to the shape of the space formed after the contact between the threaded ring and the groove; The front end of the open loop is a 45° slope; A positioning groove is formed on the outer wall of the front end of the probe housing; The inner and lower part of each probe is provided with an electrical connection pin seat, and the electrical connection pin seat includes a tongue-shaped pin whose position and shape are adapted to the positioning groove on the outer wall of the upper part of the probe housing. There is a protruding thrust pin on the tongue pin, and the thrust pin springs into the pin groove on the inner wall of the probe housing, thereby fixing the electrical connection pin seat; 31 pins are arranged on the electrical connection pin seat; The diameter of the inner wall at the lower end of the probe shell is greater than the diameter of the middle inner wall, and is compatible with the diameter of the threaded ring on the upper part of the probe, and the lower end is provided with an internal thread, which can be screwed to the threaded ring on the upper part of the probe; The section of the inner wall at the lower end of the probe housing and the internal thread are chamfered at 45°. 6. The oil exploration multifunctional combination logging tool according to claim 5, characterized in that: on the outer wall of the upper part of the probe housing, the part before the groove is provided with no less than one set of sealing rings.

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