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Stratum-changing production method and technical pipe column

A production method and production process technology, which is applied in the direction of earthwork drilling, production fluid, wellbore/well components, etc., can solve the problems of short service life, heavy operation workload, and non-reusability of the pipe string for layer change, and achieve pipe string Long life, high success rate, and cost-saving effects

Inactive Publication Date: 2004-03-10
OIL EXTRACTION TECH INST OF SINOPEC SHENGLI OILFIELD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it has the problem that the pipe string is an integral pipe string, and the sucker rod string needs to be lifted and lowered when changing the layer, and then the hydraulic pressure is added from the oil pipe for the operation of throwing the ball and changing the layer. The hydraulic switch tool can only be switched on and off once, and cannot be reused. It is necessary to pull out all the pipe strings at the same time, the workload is heavy, and the life of the layer-changing pipe string is short, resulting in short pump inspection cycle and high cost.

Method used

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  • Stratum-changing production method and technical pipe column
  • Stratum-changing production method and technical pipe column
  • Stratum-changing production method and technical pipe column

Examples

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Embodiment Construction

[0020] Such as figure 1 , the casing 6 is lowered into a hands-off process string, the casing cross 2 is connected to the casing gate 1, and the outlet pipe is connected to the downhole switch control detection device 3 . The drainer 4 and the deep well pump 5 are connected by the pipe string 13 . The packer 8 (Y441E high-pressure packer) is connected to the DYS hydraulic release device 7, and the device separates the upper pipe string from the lower pipe string. Install a YK-type hydraulic layer change switch 9 on the pipe string at the corresponding position of the oil, gas, and water layers 12, and install a Y341E high-pressure packer on the pipe string at the corresponding position of the interlayer between the oil, gas, and water layers 12 10. The oil pipe 13 is used to connect the packer and the hydraulic layer changing switch, and a plug 11 is connected to the bottom.

[0021] Such as figure 2 The short joint 14 of the downhole switch control detection device 3 is ...

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Abstract

The present invention discloses a method of stratum-changing production and technological pipe column in oil exploitation. After the technological pipe column is set in the well and liquid pressure is applied, the well switches are opened or closed in the stratums to be changed. The technological pipe column controlled by surface switch controlling and detecting device consists of casing valves, well mouth four-way valve, oil relieving device, pump, casing, oil pipe, packer, well switches and pipe plug. There is a change-over device set between the pump and the packer and after the pipe column is set to preset position, the pipe column is separated.

Description

1. Technical field [0001] The invention relates to a method and equipment for exploiting oil, gas and water from an oil well, in particular to a method and a process pipe string for producing oil, gas and water wells by changing layers without moving pipe strings. 2. Background technology [0002] An article titled "Application of Mechanically Searching for Plugging Water in Well No. The layer changing string is composed of a pump, a hydraulic switch tool, a packer, a sliding sleeve, and a plug. Its purpose is to change layers, find water, and block water. But it has the problem that the pipe string is an integral pipe string, and the sucker rod string needs to be lifted and lowered when changing the layer, and then the hydraulic pressure is added from the oil pipe for the operation of throwing the ball and changing the layer. The hydraulic switch tool can only be switched on and off once, and cannot be reused. It is necessary to pull out all the pipe strings at a time, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/14
Inventor 周志齐宋开利柴国兴李文波
Owner OIL EXTRACTION TECH INST OF SINOPEC SHENGLI OILFIELD
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