Horizontal Well Segmented Gravel Pack Service Tool
A gravel packing and service tool technology, applied in wellbore/well components, production fluids, earth-moving drilling, etc., can solve the problems of inability to control multiple inner diameters with different inner diameters, inconvenient operation of sliding sleeves, etc., to achieve convenient operation, high performance stable effect
Active Publication Date: 2015-09-09
PETROCHINA CO LTD
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Problems solved by technology
[0006] In order to solve the technical problem in the prior art that a horizontal well staged gravel packing service tool cannot control multiple sliding sleeves with different inner diameters and is inconvenient to operate, the present invention provides a horizontal well staged gravel packing service tool, the horizontal well The staged gravel packing service tool is matched with the staged gravel packing tool of the horizontal well, and can control the staged gravel packing tool of any section of the horizontal well, which has the advantages of convenient operation and reliability
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[0031] The sectioned gravel packing service tool for horizontal wells according to the present invention will be described in detail below in conjunction with the accompanying drawings. A segmented gravel packing service tool for horizontal wells, comprising a cylindrical outer casing 1 and a columnar inner core 2 sleeved in the outer casing 1; one end of the inner core 2 faces the liquid inlet end 11 of the outer casing 1, and the outer casing The side wall of 1 is provided with a first filling port 12 that communicates with the inside and outside of the outer casing 1, and the first filling port 12 is arranged between one end of the inner core 2 and the liquid inlet port 11; the outer surface of the inner core 2 and the outer casing 1 The inner surface of the inner core 2 is sealed and connected. The other end of the inner core 2 is provided with at least two linkage mechanisms 3. The linkage mechanisms 3 include a support rod 31 and a working arm 32. One end of the working a...
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The invention discloses a horizontal well subsection gravel pack service tool which comprises an outer sleeve and an inner core. The inner core is provided with at least two connecting rod mechanisms. Each connecting rod mechanism comprises a supporting rod and a working arm, wherein one end of each working arm is connected with the side wall of the outer sleeve through a first pin roll in a rotating mode, the other end of each working arm is connected with one end of each supporting rod through a second pin roll in a rotating mode, the other end of each supporting rod is connected with the inner core through a third pin roll in a rotating mode, and when the inner core moves towards the other end of the inner core along the axis of the outer sleeve, the other end of each working arm can rotate towards the outside of the outer sleeve by using the first pin roll as an axis, and extends out of the outer surface of the outer sleeve. The horizontal well subsection gravel pack service tool of one subsection can be mutually matched with a horizontal well subsection gravel pack service tool of each grade, and can control a horizontal well subsection gravel pack service tool of any section, effective opening and closing of the horizontal well subsection gravel pack service tool of each grade are achieved, operation is convenient, and performance is stable.
Description
technical field [0001] The invention relates to the field of gravel packing equipment in petroleum production, in particular to a segmented gravel packing service tool for horizontal wells. Background technique [0002] Horizontal well gravel packing sand control technology is one of the advanced technologies for horizontal well completion. It has the characteristics of outstanding sand control effect and long effective period of sand control. The application of this technology can effectively prevent oil wells from sanding, especially for fine silt sands, and enable oil wells to effectively exert their production capacity. Therefore, horizontal well gravel packing sand control technology has been widely used in horizontal well completion. [0003] For horizontal wells with long horizontal well sections and horizontal wells completed in stages, the method of gravel packing for sand control is often used in staged gravel packing. The main core tool used in this method is th...
Claims
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IPC IPC(8): E21B43/04
Inventor 张建军张洪君李学良杨淑英肖进东张军侯皓然孟庆菊
Owner PETROCHINA CO LTD