Layered pipe column for squeeze packing sand control process

A technology of sand control pipe and filling pipe, which is applied in the direction of production fluid, wellbore/well parts, earthwork drilling and production, etc. It can solve the problems of reducing production cost, etc., and achieve the purpose of increasing oil well production, reducing production cost and labor intensity of workers, and prolonging the production time. The effect of the effective period of sand control

Active Publication Date: 2005-04-06
OIL EXTRACTION TECH INST OF SINOPEC SHENGLI OILFIELD
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Problems solved by technology

[0003] The purpose of the present invention is to provide layered extrusion packing sand control pipe string, so...

Method used

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  • Layered pipe column for squeeze packing sand control process
  • Layered pipe column for squeeze packing sand control process
  • Layered pipe column for squeeze packing sand control process

Examples

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing, the present invention is described in further detail: see appended Figure 1-5 , The layered extrusion packing sand control string is divided into two parts: the inner packing string and the outer packing string. The inner filling pipe string includes setting and dropping hands 1, flushing pipe, inner filling tool 15, extruding and converting inner sliding pipe 21, extruding and filling outer sliding pipe 22, which are threaded in turn, and the extruding and filling outer sliding pipe 22 is suspended and sleeved On the extrusion conversion inner sliding tube 21; wherein the inner filling tool 15 includes a steel ball 13, a ball seat 14, an inner filling conversion head 16, an inner filling port 17, an inner filling outer tube 18, a clamping wall flow chamber 19, an inner filling lower Connector 20. The outer packing string includes a top hanging packer 2, an outer packing tool 3, an annunciator 25, a sand filter pipe 4, a...

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Abstract

The invention discloses the petroleum use lamination backlog to fill guards against sand pipes the column, was suitable to the multi- oil layers extrusion packing tube column, in was sufficient string of tubing including ram and in fills the tool, outside filled the tube column including the crown hook wall packer, outside filled the tool and the sand filter, outside filled on the tool to be equipped with fills the mouth. In fills the tube column to be equipped with the seat to seal washes one's hands of, outside fills the tube column to be equipped with the level the packer. After the seat seals washes one's hands of is hit the pressure to cause the crown to hang the packer place to seal, the seat seals washes one's hands of prearranges the hook wall packer separation, in fills the tube column to be able to fill in the tube column in outside to reciprocate sits the sealing course gap, fills the tool coordination backlog with outside to fill the stratum. Enhances guards against the granulated substance effect and the term of validity. The next tube column then completes many oil layers lamination backlog to fill guards against the granulated substance the construction, greatly reduced the production cost and worker's labor intensity.

Description

technical field [0001] The invention relates to downhole equipment for oil exploitation, in particular to a layered extrusion filling sand control pipe string, which is suitable for the extrusion filling sand control technology of multiple oil layers and can also be used for the extrusion filling sand control technology of a single oil layer. Background technique [0002] In the mining site of the petroleum industry, during the extraction of crude oil, the formation sand in the oil layer easily flows into the wellbore with the crude oil, resulting in the destruction of the formation skeleton structure and the intensification of sand production, resulting in the collapse of the formation deficit, and at the same time, the sand buried the oil layer so that the crude oil cannot flow into the casing. , can not be exploited, and damage oil extraction equipment and oil pipelines. At present, the gravel packing tools used in domestic oil fields are single-layer extrusion packing to...

Claims

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Application Information

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IPC IPC(8): E21B41/00E21B43/02
Inventor 张毅谢金川吴建平智勤功高雪峰陈泽江陈刚段友智易善志
Owner OIL EXTRACTION TECH INST OF SINOPEC SHENGLI OILFIELD
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