CN203201537U - Small-diameter electronically controlled intelligent pipe string for casing damaged production well - Google Patents

Abstract

An electric control intelligent pipe column with small diameter for casing damage oil production well. The problem that the existing pipe column cannot realize fine exploitation and continuous quantitative adjustment of a casing damage oil well is mainly solved. The method is characterized in that: controllable standing valve oil-well pump (2) intercommunication is at oil pipe column (1) lower extreme, release joint (3) are connected in the injection-production tubular column (4) upper end, be connected with minor diameter balanced type on injection-production tubular column (4) and cross cable packer (5), be connected with the automatically controlled injection allocation device of minor diameter (6) on injection-production tubular column (4) between minor diameter balanced type cable packer (5), there is pressure sensor in the automatically controlled injection allocation device of minor diameter (6), the automatically controlled injection allocation device of minor diameter (6) and minor diameter balanced type are crossed cable packer (5) and are connected with ground controlling means (8) through the cable. The small-diameter electronic control intelligent pipe column of the casing damage oil well can realize fine exploitation and continuous quantitative adjustment of the casing damage oil well.

Description

Small-diameter electronically controlled intelligent pipe string for casing damaged production well

technical field

The utility model relates to a pipe string used for repairing casing damage in the oil production field of an oil field, in particular to a small-diameter electronically controlled intelligent pipe string for casing damage oil production wells. the

Background technique

In the field of oil production in oilfields, the technology of electronically controlled layered production proration device is basically mature, which can meet the needs of the site and provide an effective means for the fine subdivision of the oil well end. However, with the increase of oilfield development and production life, casing damage wells are increasing year by year. However, due to structural reasons, existing pipe strings have the problem that fine production and continuous quantitative adjustment cannot be realized for oil wells with casing damage to be repaired or repaired and strengthened, which affects oil recovery efficiency. the

Contents of the invention

In order to solve the problem that the existing pipe string cannot realize fine production and continuous quantitative adjustment for oil wells whose casing damage is to be repaired or has been repaired and strengthened. The utility model provides a small-diameter electronically controlled intelligent pipe string of a casing damage production well. The small-diameter electronically controlled intelligent pipe string of casing damage production well can realize fine production and continuous quantitative adjustment for oil wells whose casing damage is to be repaired or has been repaired and strengthened. the

The technical scheme of the utility model is: the small-diameter electronically controlled intelligent pipe string of the damaged casing oil production well includes a tubing string, an oil well pump, a hand joint, a distribution pipe string, a cable packer, an electric control distribution device and a packer. device. The tubing string is connected with a tubing centralizer, the controllable fixed valve pump is connected to the lower end of the tubing string, the hand-off joint is connected to the upper end of the distribution string, the lower end of the distribution string is connected to a plug, and the distribution string is connected to a More than 2 balanced cable packers. The distribution string between the small diameter balanced cable packers is connected with an electronically controlled distribution device. There is a pressure sensor inside the electronically controlled distribution device. The spacer and the electric control distribution device are connected with the ground control device through cables, and the distribution string under the terminal electric control distribution device is connected with a packer. the

The utility model has the following beneficial effects: the small-diameter electronically controlled intelligent pipe string of the oil production well with casing damage is connected with a tubing centralizer outside the tubing string, the controllable fixed valve oil pump is connected to the lower end of the tubing string, and the hand-off joint is connected to the production line. The upper end of the pipe string and the lower end of the distribution pipe string are connected with a wire plug, and more than two balanced cable packers are connected to the distribution pipe string, and the distribution pipe string between the cable packers is connected to an electric control distribution pipe. The production device, the cable packer and the electric control distribution device are connected to the ground control device through the cable, and the distribution string under the terminal electric control distribution device is connected with the structure of the packer. Realize fine recovery and continuous quantitative adjustment for casing damaged oil wells. Therefore, the small-diameter electronically controlled intelligent pipe string of casing damage production wells can realize fine production and continuous quantitative adjustment for oil wells whose casing damage is to be repaired or has been repaired and strengthened. the

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model. the

In the figure, 1-tubing string, 2-well pump, 3-hands-off joint, 4-production string, 5-cable packer, 6-electric control distribution device, 7-packer, 8-surface control device.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Fig. 1, the small-diameter electronically controlled intelligent tubing string of the casing damaged production well includes tubing string 1, oil well pump 2, hand joint 3, distribution string 4, cable packer 5, and electronically controlled distribution device 6 and packer 7. The tubing string 1 is connected with a tubing centralizer, the controllable fixed valve oil well pump 2 is connected to the lower end of the tubing string 1, the drop joint 3 is connected to the upper end of the production string 4, and the lower end of the distribution string 4 is connected to a plug. The production string 4 is connected with more than two balanced cable packers 5, and the distribution string 4 between the small-diameter balanced cable packers 5 is connected with an electronically controlled distribution device 6. There is a pressure sensor in the device 6, the balanced cable packer 5 and the electric control distribution device 6 are connected to the ground control device 8 through the cable, and the distribution string 4 under the terminal electric control distribution device 6 is connected with a seal Spacer 7. The small-diameter electronically controlled intelligent pipe string of the casing damaged production well mainly relies on the balanced cable packer 5 to separate the oil layers, and the electronically controlled proration device 6 is used to realize stratified production proration. The ground control device 8 on the ground controls the forward and reverse rotation of the motor of the electronically controlled distribution device 6 in the well, so as to control the opening and closing of the corresponding layer valves, and realize the continuous quantitative adjustment of the corresponding production layer channel. Equipped with a pressure sensor, the formation pressure can be monitored layer by layer from time to time.

In actual use, the small-diameter electronically controlled intelligent pipe string of the casing damaged oil production well first connects the plug with the electronically controlled distribution device 6 and the balanced cable packer 5 and runs it into the well step by step, and then runs into the hand-off joint 3. The controllable fixed valve oil well pump 2 and the oil tubing string 1 on the pump. The cable connection of tools at all levels requires reliable sealing and insulation. Cable protectors should be installed at large diameter positions such as oil pipe collars. At the wellhead, use a pump truck to pressurize the oil pipe, gradually increase the pressure from 5-10 MPa to 15-18 MPa, release the tools step by step, lower the sucker rod to the bottom of the pump, close the fixed valve, and put into production. Use the host computer to connect the downhole cable to perform level switch and pressure measurement. the

The small-diameter electronically controlled intelligent pipe string of casing damaged oil production wells has been successfully tested in 4 wells, and the expected results have been achieved. The average daily downfall of a single well is 21.5 tons, the oil production is basically stable, the comprehensive water cut has dropped by 1.35 percentage points, and the average flow pressure has dropped by 0.66 MPa, and good results have been seen.

Claims (1)

1. a cover decreases producing well minor diameter electric-controlled intelligent tubing string, comprise tubing string (1), oil well pump (2), back-off sub (3), join and produce tubing string (4), cable-passing packer (5), automatically controlled production mandrel (6) and packer (7), it is characterized in that: tubing string (1) is externally connected with tubing centrilizer, controlled standing valve oil well pump (2) is communicated with in tubing string (1) lower end, back-off sub (3) is connected to join produces tubing string (4) upper end, join product tubing string (4) lower end and be connected with plug, join to produce on the tubing string (4) and be connected with 2 above balanced type cable-passing packers (5), joining between the minor diameter balance type cable packer (5) produces on the tubing string (4) and is connected with automatically controlled production mandrel (6), automatically controlled production mandrel has pressure sensor in (6), balanced type cable-passing packer (5) is connected with ground control unit (8) by cable with automatically controlled production mandrel (6), and joining under the terminal automatically controlled production mandrel (6) produces on the tubing string (4) and be connected with packer (7).

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