Joint implementation tubular column for fracturing and water control production and method

A pipe string and fracturing sliding sleeve technology is applied in the field of joint implementation of fracturing and water control production, which can solve the problems of low oil production in oil wells and inability to control water production in oil wells, and achieves improved oil recovery, Easy to promote and use, safe and reliable effect

Active Publication Date: 2018-08-14
CHINA PETROLEUM & CHEM CORP
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Problems solved by technology

However, when the depth of the oil well is relatively deep, for example, when the depth of the oil well exceeds 7,500 meters, due to the limitation of the length of the coiled tubing and the strength of the mater

Method used

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  • Joint implementation tubular column for fracturing and water control production and method
  • Joint implementation tubular column for fracturing and water control production and method
  • Joint implementation tubular column for fracturing and water control production and method

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Embodiment approach

[0033] The present invention also provides a joint implementation method of fracturing and water control production, which includes the following steps:

[0034] Step 1. Run the above-mentioned joint implementation string connected to it into the oil well through the drill pipe, and set the suspension packer 2 and each open hole packer 4 after performing the slurry replacement operation, and then use the back-insertion string to replace Drill pipe;

[0035] Step 2. Inject fracturing fluid into the back-insertion string and put pressure-suppressing balls into it to perform staged fracturing operations. Open the self-closing fracturing sliding sleeve in sequence from close to ball seat 3 to away from ball seat 3 5, and ensure that after the previous self-closing fracturing sleeve 5 is closed, the latter self-closing fracturing sleeve 5 is opened again;

[0036] Step 3, forcing the pressure-suffocating ball to flow back to the ground along with the fracturing fluid, and then rea...

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Abstract

The invention provides a joint implementation tubular column for fracturing and water control production and a method. The joint implementation tubular column comprises a tubular column body, a hanging packer arranged at one end of the tubular column body, a ball seat arranged at the other end of the tubular column body, a plurality of open hole packers, a plurality of self-closed fracturing sliding sleeves and a plurality of open-close type inflow control devices, wherein the open hole packers, the self-closed fracturing sliding sleeves and the open-close type inflow control devices are arranged on the tubular column body and located between the hanging packer and the ball seat. The self-closed fracturing sliding sleeves and the open-close type inflow control devices are separately arranged between every two adjacent open hole packers, and the self-closed fracturing sliding sleeves and the open-close type inflow control devices are arranged between the ball seat and the open hole packers which is most close to the ball seat. Through the joint implementation tubular column, the water control production can also be realized when the depth of an oil well is deep, and oil production of oil well with the deeper depth is improved.

Description

technical field [0001] The invention belongs to the field of oil and gas exploitation equipment, and in particular relates to a pipe string and method for combined implementation of fracturing and water control production. Background technique [0002] Staged fracturing completion technology is a commonly used oilfield stimulation method, which can significantly increase the permeability of the reservoir to achieve the purpose of increasing oil well production. After the staged fracturing operation, in order to solve the problem of difficult water control in the later stage of production in the prior art, it is mainly by setting a switchable fracturing sleeve on the pipe string, and inserting the coiled tubing with the switch tool into the pipe string Zhonglai can selectively open or close the switchable fracturing sleeve to realize water production control. However, when the depth of the oil well is relatively deep, for example, when the depth of the oil well exceeds 7,500...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B43/12E21B34/14
CPCE21B34/14E21B43/12E21B43/26
Inventor 马新中李冬梅李双贵李林涛苏鹏龙武万小勇任波杜春朝李翔黄传艳邹伟宋海李根
Owner CHINA PETROLEUM & CHEM CORP
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