Continuous oil pipe horizontal well drilling grinding and pumping type composite bridge plug process

A composite bridge and horizontal well technology, applied in the fields of earthwork drilling, wellbore/well components, etc., can solve the problems of time-consuming and labor-intensive oil and gas well reservoirs, high risk of well control, affecting production, etc., saving man-hours and construction safety. High, low workload effect

Active Publication Date: 2015-10-28
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by the wellbore structure and fracturing, this process is easy to produce bridge plug sand burial after fracturing, which will cause well plugging and reduce production. Composite bridge plugs

Method used

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  • Continuous oil pipe horizontal well drilling grinding and pumping type composite bridge plug process
  • Continuous oil pipe horizontal well drilling grinding and pumping type composite bridge plug process
  • Continuous oil pipe horizontal well drilling grinding and pumping type composite bridge plug process

Examples

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments:

[0021] See Figure 1 to Figure 4 The ground equipment used in the process of the present invention includes pump injection equipment 1, drum 2, coiled tubing 3, injection head 4, blowout preventer 5, blowout preventer, four-in-one blowout preventer 6, mud pool 8, reverse Drainage tank 9, slippery water circulation pipe 10, glue circulation pipe 11, liquid storage tank, and well control manifold; the coiled tubing used in the process includes the swirl flushing head 12 connected sequentially from bottom to top , Hydraulic drop 13, double flap check valve A14 and outer slip connector A15; the coiled tubing drilling and grinding tool string used in this process includes grinding shoes 16, hydraulic motor 17, hydraulic oscillation connected in sequence from bottom to top The device 18, the hydraulic drop handle 19, the jar 20, the double flap check valv...

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PUM

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Abstract

The invention discloses a continuous oil pipe horizontal well drilling grinding and pumping type composite bridge plug process, which comprises the following steps of: (1) installing ground equipment; (2) connecting the ground equipment with a continuous oil pipe well pigging and washing tool string; (3) putting the continuous oil pipe well pigging and washing tool string into a well; (4) detecting the position of a fish top of a composite bridge plug, and performing well washing; (5) connecting the ground equipment with the continuous oil pipe well pigging and washing tool string; (6) putting the continuous oil pipe well pigging and washing tool string into the well; (7) performing drilling and grinding operation; (8) pumping three-side glue liquid into the well after the bridge plug is penetrated through drilling; and (9) putting down a continuous oil pipe (3) and performing the drilling grinding operation on the next bridge plug. The process has the advantages that the bridge plug drilling and grinding under pressure can be directly performed after the fracture without the pressure relieving; the construction period is short; the work intensity is low; and the stratum energy loss can be effectively prevented.

Description

Technical field [0001] The invention relates to the technical field of downhole operations of oil and gas wells, in particular to a drilling and grinding pumping type composite bridge plug technology for coiled tubing horizontal wells. Background technique [0002] In recent years, with the rapid development of exploration for shale gas and tight oil and gas reservoirs, horizontal well volume fracturing technology has been widely used. For such large-scale fracturing operations, horizontal well pumping composite bridge plug staged fracturing technology is mostly used. Affected by wellbore structure and fracturing, this process is easy to produce bridge plug sand burial after the pressure is released, which causes well blockage and reduces production. It is necessary to drill and grind the bridge plug to achieve full-diameter production; the conventional technology is used for drilling and grinding pumping. Composite bridge plugs need to be blown out and kill wells before they can...

Claims

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Application Information

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IPC IPC(8): E21B29/00
Inventor 吴德白田增富玉海仪忠建崔世杰董连刚
Owner BC P INC CHINA NAT PETROLEUM CORP
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