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Reverse filling multi-layer sand control pipe string at the bottom of an open hole horizontal well and its method

A technology for sand control pipes and horizontal wells, which is used in wellbore/well components, earthwork drilling and production of fluids, etc., can solve the problem that the sand control pipe string cannot be reversely filled with multiple layers of sand control at the bottom, and can prevent axial movement, Anti-feedback and good sealing performance

Active Publication Date: 2018-05-18
山东科瑞石油装备有限公司
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Problems solved by technology

This technology can solve the technical problem that the existing sand control string cannot realize multi-layer sand control by reverse filling at the bottom

Method used

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  • Reverse filling multi-layer sand control pipe string at the bottom of an open hole horizontal well and its method
  • Reverse filling multi-layer sand control pipe string at the bottom of an open hole horizontal well and its method
  • Reverse filling multi-layer sand control pipe string at the bottom of an open hole horizontal well and its method

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Embodiment Construction

[0042] The specific structure of the reverse filling multi-layer sand control string at the bottom of an open hole horizontal well according to the present invention and a kind of reverse packing multilayer at the bottom of an open hole horizontal well using the reverse filling multi-layer sand control string at the bottom of the open hole horizontal well will be described in detail below in conjunction with the accompanying drawings Sand control method.

[0043] like Figure 1 to Figure 7As shown, the present invention is a reverse filling multi-layer sand control string at the bottom of an open-hole horizontal well, including a well-stayed sand control string and a filling service string. The well-staying sand control string includes from top to bottom: hanger 1, cementing casing 2, open hole packer 3, sand filter pipe 4, backwash sleeve 5, filling tool 6, casing 7, casing Shorting 8, guide shoe 9; the filling service string includes from top to bottom: oil pipe 10, oil pip...

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Abstract

The invention discloses an open-hole horizontal well bottom reverse packing multi-layer sand control tubular column to meet the increasing demand for open-hole horizontal well sand control technologies. The technology comprises two trips of tubular columns - a retention well sand control tubular column and a packing service tubular column, a mean of bottom reverse pack is adopted, gravel pack of all layers can be achieved in one trip of packing service tubular column, packing compaction is good, construction layers and positions are numerous, operation is simple, and reliability is high. According to the open-hole horizontal well bottom reverse packing multi-layer sand control tubular column, the technical problem that bottom reverse packing multi-layer sand control cannot be achieved in the existing sand control tubular column is solved; through a bottom-up packing mean, the technical advantage of the bottom reverse packing multi-layer sand control is fully developed, and a packing interval is long, packing compaction is good and construction reliability is high; the packing jobs in all positions can be achieved through one trip of packing service tubular column, and the functions of a squeeze packing and a circulating packing are provided; the technical problem that a horizontal well multi-layer squeeze packing cannot be achieved in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of oil well sand control, in particular to a reverse filling multi-layer sand control pipe string at the bottom of an open-hole horizontal well and a method thereof. Background technique [0002] The sand control technology of multi-layer gravel packing represents the more advanced sand control technology in contemporary times. At present, the companies with this technology mainly include the four major foreign oil service companies and several professional sand control companies in Shengli Oilfield in China. The sand control technology of these companies is basically They all belong to the vertical well / inclined well top circulation filling sand control technology, which cannot realize the multi-layer extrusion filling sand control operation. Horizontal well multi-layer sand control technology is a high-end technical field developed in recent years. The four major foreign oil service companies and several d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/04E21B43/10
CPCE21B43/04E21B43/10
Inventor 刘化国张代明陈志强贺勇
Owner 山东科瑞石油装备有限公司
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