Horizontal well packer staged fracturing technology tube pillar

A technology for staged fracturing and process strings, which is applied in the directions of sealing/isolation, wellbore/well components, and production fluids, etc., which can solve the problems of high labor intensity, accidents, and complicated procedures for operators, and achieve improvement Construction safety and reliability, optimized stress state, and strong operability

Inactive Publication Date: 2009-10-21
RES INST OF PETROLEUM ENG SHENGLI OIL FIELD SINOPEC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The staged fracturing treatment of horizontal wells in oil exploitation is generally mechanical staged fracturing. This fracturing method has contributed to improving the permeability of oil layers and increasing the production of production wells and the injection rate of injection wells. There are the following shortcomings or deficiencies: (1) The fracturing packer is forced to construct in sections. After the fracturing of a section is completed, the pipe string is lifted up to carry out the fracturing construction of the next sect

Method used

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  • Horizontal well packer staged fracturing technology tube pillar
  • Horizontal well packer staged fracturing technology tube pillar
  • Horizontal well packer staged fracturing technology tube pillar

Examples

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Embodiment Construction

[0013] See attached Figure 1-Figure 3 , a horizontal well packer staged fracturing process string, including a tubing string 2, a hydraulic anchor 3, a seat seal controller 4, a span packer A6, a span packer B8, a span packer Packer C10, slipper blaster 7, blaster 9, guider 11 and capillary line 5. The tubing string 2 is sequentially installed and connected with a hydraulic anchor 3, a seat seal controller 4, a straddle packer A6, a sliding sleeve sand blaster 7, a straddle packer B8, a sand blaster 9, and a straddle packer Packer C10 and guider 11. The capillary line 5 is connected to the setting controller 4 and the straddle packer A6, straddle packer B8, and straddle packer C10 on one side of the tubing string 2.

[0014] The two ends of straddle packer A6, straddle packer B8, and straddle packer C10 are respectively provided with an upper pressure hole 61 and a lower pressure transmission hole 63, and the upper pressure hole 61 and the lower pressure transmission hole ...

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Abstract

A horizontal well packer staged fracturing technology tube pillar comprises an oil string, a hydraulic anchor, a seat sealing controller, a straddle packer A, a straddle packer B, a straddle packer C, a sliding bush sand spraying device, a sand spraying device, a guider, and a capillary tube line; wherein the oil string is installed and connected with the hydraulic anchor, a seat sealing controller, the straddle packer A, the sliding bush sand spraying device, the straddle packer B, the sand spraying device, the straddle packer C and the guider; the capillary tube line is connected with the seat sealing controller, the straddle packer A, the straddle packer B, the straddle packer C at one side of the oil string. In the situation of the immovability of the tube pillar, the tube pillar is characterized by realizing the pressing parting technology of the two to three layer by bowling, high construction safe reliability, strong operability, simple working procedure, simple implementation and the like and is widely applied in the petroleum oil production technology.

Description

1. Technical field [0001] The invention relates to an oil production well fracturing reconstruction process string, in particular to a segmental fracturing process string for a horizontal well packer. 2. Background technology [0002] The staged fracturing treatment of horizontal wells in oil exploitation is generally mechanical staged fracturing. This fracturing method has contributed to improving the permeability of oil layers and increasing the production of production wells and the injection rate of injection wells. There are the following shortcomings or deficiencies: (1) The fracturing packer is forced to construct in sections. After the fracturing of a section is completed, the pipe string is lifted up to carry out the fracturing construction of the next section. It is difficult to unseal the packer after fracturing; (2) The fracturing failure is caused by the damage and poor sealing of the packer in the lifting string; (3) The formation pressure is high after the fra...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B33/122
Inventor 郝金克张全胜吕芳蕾吕玮宋相隆董社霞李文波
Owner RES INST OF PETROLEUM ENG SHENGLI OIL FIELD SINOPEC
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