Hydraulic jet perforation, fracturing and gas lift liquid drainage integrated technical pipe column

A technology of hydrojet and process string, which is applied in the direction of production fluid, wellbore/well components, earthwork drilling and production, etc., which can solve the problems of multiple construction procedures, large reservoir damage, and long construction period, so as to save nitrogen resources, The effect of reducing damage and shortening the construction period

Inactive Publication Date: 2011-02-23
PETROCHINA CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above method has many construction procedures, long construction period, and great dam...

Method used

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  • Hydraulic jet perforation, fracturing and gas lift liquid drainage integrated technical pipe column
  • Hydraulic jet perforation, fracturing and gas lift liquid drainage integrated technical pipe column
  • Hydraulic jet perforation, fracturing and gas lift liquid drainage integrated technical pipe column

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Embodiment 1

[0031] Embodiment 1: The present invention will be further described in detail by taking a hydraulic jet perforation fracturing gas-lift liquid drainage integrated process string that needs to be subjected to two-layer fracturing as an example.

[0032] refer to figure 1. Hydraulic jet perforation fracturing gas lift drainage integrated process string, including tubing 1, primary gas lift valve 3, secondary gas lift valve 4, gas lift valve, primary hydraulic injector 5, sliding sleeve seat 6, It consists of a secondary hydraulic injector 7, a check valve 8, a screen pipe 9 and a plug 10. Inside the casing 2, there are two gas lift valves successively connected through the oil pipe 1 from top to bottom, that is, the primary gas lift valve 3 and the secondary gas lift valve 4. A first-stage hydraulic injector 5 is connected to the lower part of the second-stage gas lift valve 4 through the oil pipe, and a sliding sleeve seat 6 is connected to the lower part of the first-stage ...

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Abstract

The invention discloses a hydraulic jet perforation, fracture and gas lift liquid drainage integrated technical pipe column, which is applied to the oilfield gas well vertical shaft hydraulic jet perforation and fracture and the liquid drainage after the fracture, and a row of pipe columns can complete the oilfield gas well vertical shaft hydraulic jet perforation and fracture and the liquid drainage after the fracture. 2 to 5 gas lifting valves are connected in a casing sequentially from top to bottom by an oil pipe; the lower part of the gas lifting valve is connected with 1 to 4 first-stage hydraulic injectors by the oil pipe; the lower part of each first-stage hydraulic injector is connected with a sliding sleeve base; the lower end of the lower sliding sleeve base is connected with a second-stage hydraulic injector by the oil pipe; the lower end of the second-stage hydraulic injector is connected with a check valve; the lower end of the check valve is connected with a sieve tube and a pipe plug; the first-stage hydraulic injectors are arranged opposite to the top of an upper gas pay; and the second-stage hydraulic injector is arranged opposite to the top of a low gas pay. The invention has the advantages of realizing the jet perforation, fracturing of separated layers and gas lift liquid drainage without moving the pipe columns.

Description

technical field [0001] The invention relates to the technical field of oil field workover, in particular to an integrated process pipe string in which hydraulic jet perforation fracturing of a gas well vertical well and liquid drainage after fracturing are completed by one pipe string. Background technique [0002] At present, for gas wells with two or more perforation sections at the same time, to perform layered fracturing and liquid drainage after fracturing to seek production, it is generally first to use the cable perforation method to shoot all the perforation sections sequentially, and then A layered fracturing tool composed of multiple packers is lowered for fracturing. After the fracturing is completed, if the gas well cannot spray through itself, swabbing or coiled tubing is used to drain fluid for production. The above method has many construction procedures, long construction period, and great damage to the reservoir, especially the risk of blowout when swabbing ...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B43/114E21B43/00E21B43/11E21B43/119
Inventor 任国富李宪文付钢旦桂捷张文星赵广民王在强胡相君
Owner PETROCHINA CO LTD
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