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Construction method for filling gravel in horizontal oil well pipe

A technology of gravel filling and construction method, which can be used in earth-moving drilling, wellbore/well components, cleaning appliances, etc., and can solve the problems of long construction period and high risk.

Active Publication Date: 2015-09-30
SLOF KANGBEI IND & TRADING
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The entire operation process requires two trips of pipe strings, which has a long construction period and high risks

Method used

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  • Construction method for filling gravel in horizontal oil well pipe
  • Construction method for filling gravel in horizontal oil well pipe
  • Construction method for filling gravel in horizontal oil well pipe

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Embodiment Construction

[0024] combined with figure 1 , a kind of gravel packing construction method in oil field horizontal well pipe that the present invention mentions, comprises the following steps:

[0025] a. Bottom gravel packing valve g, precision sand filter pipe c, meltable centralizer b, two-way hot-melt thermal stress compensator d, unsealable drop-in suspension packer a, flushing pipe e, filling server f and oil pipe Connect together according to the design sequence, and go down to the predetermined position in the casing; among them, the bottom gravel filling valve g, the precision sand filter pipe c, the meltable centralizer b, the two-way hot-melt thermal stress compensator d and the filling server f are existing Technical products, no more details;

[0026] b. Circulating well flushing, throwing hollow steel balls to pressurize, seat seal and detachable suspension packer 1;

[0027] c. Unsealable disposable suspension packer 1 inspection, unsealable disposable suspension packer ...

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Abstract

The invention relates to a construction method for filling gravel in a horizontal oil well pipe. The method comprises the following steps that firstly, a bottom gravel filling valve, a fine sand filtering pipe, a melting centering device, a bi-directional hot melting type thermal stress compensator, a de-blocking releasing suspending packer, a washing pipe and an oil pipe are connected together in the design sequence, and are descended to the pre-set position of a casing pipe; secondly, circulating well washing is carried out, pressing is carried out by throwing a hollow steel ball, and a packer is subjected to sealing; thirdly, sealing examining is carried out on the packer, and releasing is carried out on the packer; fourthly, a pipe column is lifted up, reverse circulating is carried out to wash out the hollow steel ball; fifthly, the pipe column is decentralized, and filling working is carried out; sixthly, the pipe column is lifted up, the reverse circulating washing is carried out on the well; seventhly, the pipe column is taken out, and the filling working is completed. The construction method for filling the gravel in the horizontal oil well pipe has the advantages that the pipe column only needs to be decentralized once, and the working can be completed. On the premise of guaranteeing the gravel filling quality, the construction technology is simplified, the working cycle is shortened, and the construction disk is lowered.

Description

technical field [0001] The invention relates to a construction method for a horizontal well pipe in an oil field, in particular to a construction method for gravel filling in a horizontal well pipe in an oil field. Background technique [0002] The most prominent problem of unconsolidated sandstone in reservoir development is sand production, especially after sand production in horizontal wells, it is more difficult to take measures. Due to the different types of reservoirs, openhole screen gravel packing and openhole screen sand control completion technologies are mostly used in horizontal wells. At present, sand control of sand filter tubes suspended in the casing after perforation and placed horizontally in the horizontal section and sand control of open hole screen tubes are mainly used. After completion of sand control failure, the second sand control operation can also be carried out by hanging screen pipe and gravel packing in the pipe. [0003] At present, the ...

Claims

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Application Information

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IPC IPC(8): E21B43/04E21B43/10
CPCE21B33/1295E21B37/08E21B43/04E21B43/10
Inventor 付强郭新军鲁友文
Owner SLOF KANGBEI IND & TRADING
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