CN201915931U - Special setting ball seat for fracture of horizontal well - Google Patents
Special setting ball seat for fracture of horizontal well Download PDFInfo
- Publication number
- CN201915931U CN201915931U CN2010206853927U CN201020685392U CN201915931U CN 201915931 U CN201915931 U CN 201915931U CN 2010206853927 U CN2010206853927 U CN 2010206853927U CN 201020685392 U CN201020685392 U CN 201020685392U CN 201915931 U CN201915931 U CN 201915931U
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- China
- Prior art keywords
- ball seat
- urceolus
- seat
- ball
- horizontal well
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- Expired - Lifetime
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- 230000000903 blocking effect Effects 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
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Abstract
The utility model relates to a special setting ball seat for the fracture of a horizontal well, which is mainly used for the fracture transformation of the horizontal well in the exploration process of an oil and gas field. The ball seat consists of an upper joint, a connection sleeve, an external cylinder, a ball seat, a pin, a split ring and a lower joint. In the descending process, the top and bottom of the ball seat are communicated by the upper and lower through holes in the connection sleeve; and a pipe column is communicated with an annulus at the moment, so that the grouting and circulation are convenient; during setting operation, a ball is placed at a proper place; and a valve ball plugs the ball seat, so that an oil pipe holds pressure instantly; the pin is cut through; the ball seat is pushed to move downwards by pressure; the split ring is blocked in a circumferential groove on the external wall of the ball seat to realize locking; at the moment, the connection channels of the upper and lower through holes are plugged; and the packer setting of the pipe column can be realized by continuous pressurizing. The ball seat has a simple structure, and is safe and reliable and suitable for the staged fracturing construction of the horizontal well.
Description
Technical field
The utility model relates to the special-purpose seat of a kind of fractured horizontal well blocking seat, is mainly used in the fractured horizontal well reforming technology in the oilfield exploitation procedure, belongs to oil gas well development wellbore operations field of tool.
Background technology
At present, the seat blocking seat of using in the oil gas field separate stratum fracfturing process pipe string, mainly at straight well or inclined shaft design, this ball seat after ball is gone into ball seat, even when not having pressure in the tubing string, relies on the action of gravity of ball, and a seat blocking still can be fixed in the ball seat.But for the horizontal well in segments pressure break, the operating position of seat blocking seat is in horizontal segment, when the insufficient pressure in the tubing string when being fixed on ball on the ball seat, ball will break away from seat blocking seat, will influence the sealing of later stage tubing string and the seat of packer and seal.
The utility model content
The purpose of this utility model is to provide the special-purpose seat of a kind of fractured horizontal well blocking seat, by improving a connectivity structure of the inside of blocking seat, realizes the sealing of tubing string and the purpose of ball seat upper packer seat envelope.
The utility model adopts following technical scheme, it is the special-purpose seat of a kind of fractured horizontal well blocking seat, by top connection, adapter sleeve, urceolus, ball seat, pin, split ring and lower contact constitute, it is characterized in that top connection lower port inner thread connects the outer wall of the upper port of urceolus, ball seat is housed in the urceolus, it is cylindric that ball seat is, one section is solid in the middle of the cylinder of ball seat, ball seat epimere and hypomere are hollow, the outer wall of ball seat and outer tube inner wall seal ring seal, pin on the urceolus is fixed on ball seat in the urceolus, the lower port outer wall of urceolus is connected with the upper shed inner thread of lower contact, on the first step face of the lower contact inner chamber that the urceolus lower port props up a groove is arranged, split ring is enclosed within on the ball seat, be embedded in the groove of first step face, have a circle circumferential groove on the outer wall of ball seat hypomere, the epimere of ball seat has through hole near on the sidewall of ball seat central solid section, last through hole also runs through the sidewall of the urceolus of contact, the hypomere of ball seat has lower through-hole near on the sidewall of central solid section, lower through-hole also runs through the sidewall of the urceolus of contact, between the restriction step on the outer wall of adapter sleeve suit top connection lower port and the restriction step of lower contact upper port.
The outer wall of above-mentioned urceolus and upper and lower joint screw thread junction all have one to compress boss, so that being connected between urceolus and upper and lower joint is more firm.
The opening angle of urceolus upper end is identical with the opening angle of ball seat upper end.
The inner chamber of lower contact has two step surfaces, and first step surface is used for limiting the bottom of urceolus, and second step surface is used for limiting mobile ball valve bottom.First step surface to the second step surface spacing equates to the distance that the ball valve outer wall has the circumferential groove position with the ball valve bottom.
Operating principle of the present utility model, with horizontal well in segments fracturing string fit applications the time, oil pipe in top connection and the fracturing string, packer links to each other, lower contact links to each other with the bottom float shoe, ball seat is lowered in the process with tubing string, owing to go up through hole in the adapter sleeve and lower through-hole is communicated with ball seat up and down, is communicated with between the tubing string of this moment and the annular space, be convenient to grouting and circulate, pass through during the operation of seat envelope from the valve ball of well head input and ball seat coupling, when valve ball puts in place, the valve ball shutoff the last through hole of ball seat, oil pipe is built the pressure rapidly, when pressure reduction reach pin cut off pressure the time, pin is cut off, and pressure continues to promote ball seat and moves down, when ball seat is displaced downwardly to the lower contact at split ring place, the split ring retraction, be stuck in the circumferential groove on the ball seat outer wall, realize locking, avoid moving on the ball seat, at this moment the interface channel of going up through hole and lower through-hole is by shutoff, even valve ball and ball seat break away from, whole tubing string also can form a confined space, continues to suppress the packer set that just can realize on the tubing string.
The utility model is simple in structure, and is safe and reliable, is applicable to the staged fracturing construction technology of horizontal well.
Description of drawings
Fig. 1 is the structural representation before the utility model seat envelope;
Fig. 2 is the structural representation that the utility model seat is honored as a queen;
In the drawings: top connection 1, urceolus 2, sealing ring 3, ball seat 4, adapter sleeve 5, pin 6, split ring 7, lower contact 8, last through hole 9, lower through-hole 10, circumferential groove 11, boss 12.
The specific embodiment
Below in conjunction with accompanying drawing, structure of the present utility model is further specified, as shown in fig. 1, the special-purpose seat of a kind of fractured horizontal well blocking seat, by top connection 1, adapter sleeve 5, urceolus 2, ball seat 4, pin 6, split ring 7 and lower contact 8 constitute, it is characterized in that top connection 1 lower port inner thread connects the outer wall of the upper port of urceolus 2, ball seat 4 is housed in the urceolus 2, ball seat 4 is cylindric, one section is solid in the middle of the cylinder of ball seat 4, ball seat 4 epimeres and hypomere are hollow, the outer wall of ball seat 4 and urceolus 2 inwalls seal with joint ring 3, pin 6 on urceolus 2 outer walls is fixed on ball seat 4 in the urceolus, the lower port outer wall of urceolus 2 is connected with the upper shed inner thread of lower contact 8, on the first step face of lower contact 7 inner chambers that urceolus 2 lower port prop up a groove is arranged, split ring 7 is enclosed within on the ball seat, be embedded in the groove of first step face, have a circle circumferential groove 11 on the outer wall of ball seat 4 hypomeres, the epimere of ball seat has through hole 9 near on the sidewall of ball seat central solid section, last through hole 9 also runs through the sidewall of the urceolus of contact, the hypomere of ball seat has lower through-hole 10 near on the sidewall of central solid section, lower through-hole 10 also runs through the sidewall of the urceolus of contact, between the restriction step on the outer wall of adapter sleeve 5 suit top connections 1 lower port and the restriction step of lower contact 8 upper port.
The outer wall of above-mentioned urceolus 2 and upper and lower joint screw thread junction all have one to compress boss 12, so that being connected between urceolus and upper and lower joint is more firm.
The opening angle of above-mentioned urceolus 2 upper ends is identical with the opening angle of ball seat 4 upper ends.
The inner chamber of above-mentioned lower contact 8 has two step surfaces, and first step surface is used for limiting the bottom of urceolus, and second step surface is used for limiting mobile ball valve bottom.First step surface to the second step surface spacing equates to the distance that the ball valve outer wall has the circumferential groove position with the ball valve bottom.
Claims (4)
1. the special-purpose seat of fractured horizontal well blocking seat, by top connection (1), adapter sleeve (5), urceolus (2), ball seat (4), pin (6), split ring (7) and lower contact (8) constitute, it is characterized in that top connection (1) lower port inner thread connects the outer wall of the upper port of urceolus (2), ball seat (4) is housed in the urceolus (2), ball seat (4) is cylindric, one section is solid in the middle of the cylinder of ball seat (4), ball seat (4) epimere and hypomere are hollow, the outer wall of ball seat (4) and urceolus (2) inwall seal with joint ring (3), pin (6) on urceolus (2) outer wall is fixed on ball seat (4) in the urceolus, the lower port outer wall of urceolus (2) is connected with the upper shed inner thread of lower contact (8), on the first step face of lower contact (7) inner chamber that urceolus (2) lower port props up a groove is arranged, split ring (7) is enclosed within on the ball seat, be embedded in the groove of first step face, have a circle circumferential groove (11) on the outer wall of ball seat (4) hypomere, the epimere of ball seat has through hole (9) near on the sidewall of ball seat central solid section, last through hole (9) also runs through the sidewall of the urceolus of contact, the hypomere of ball seat has lower through-hole (10) near on the sidewall of central solid section, lower through-hole (10) also runs through the sidewall of the urceolus of contact, between the restriction step of restriction step on the outer wall of adapter sleeve (5) suit top connection (1) lower port and lower contact (8) upper port.
2. the special-purpose seat of fractured horizontal well as claimed in claim 1 blocking seat is characterized in that the outer wall of described urceolus (2) and upper and lower joint screw thread junction all have one to compress boss (12).
3. the special-purpose seat of fractured horizontal well as claimed in claim 1 blocking seat is characterized in that the opening angle of described urceolus (2) upper end is identical with the opening angle of ball seat (4) upper end.
4. the special-purpose seat of fractured horizontal well as claimed in claim 1 blocking seat is characterized in that the inner chamber of described lower contact (8) has two step surfaces, the bottom of first step surface restriction urceolus, second ball valve bottom that the step surface restriction is moved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206853927U CN201915931U (en) | 2010-12-23 | 2010-12-23 | Special setting ball seat for fracture of horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206853927U CN201915931U (en) | 2010-12-23 | 2010-12-23 | Special setting ball seat for fracture of horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201915931U true CN201915931U (en) | 2011-08-03 |
Family
ID=44415733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206853927U Expired - Lifetime CN201915931U (en) | 2010-12-23 | 2010-12-23 | Special setting ball seat for fracture of horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201915931U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518419A (en) * | 2012-01-06 | 2012-06-27 | 西南石油大学 | High-efficiency fracturing combined device for multi-stage horizontal well |
| CN102926704A (en) * | 2012-12-03 | 2013-02-13 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Pressure-balancing one-way valve for coiled-tubing layering fracturing |
| CN103306634A (en) * | 2012-03-09 | 2013-09-18 | 中国石油化工股份有限公司 | Sliding-sleeve-type downhole blow-out preventer and application thereof |
| EP2766561A4 (en) * | 2011-10-11 | 2015-11-18 | Packers Plus Energy Serv Inc | Wellbore actuators, treatment strings and methods |
| CN103184849B (en) * | 2011-12-29 | 2016-06-29 | 安东石油技术（集团）有限公司 | Pit shaft isolation ball seat and pit shaft isolation method |
| GB2570209A (en) * | 2017-11-29 | 2019-07-17 | Baker Hughes A Ge Co Llc | Diverter valve for a bottom hole assembly |
| CN112780227A (en) * | 2021-02-20 | 2021-05-11 | 中海油能源发展股份有限公司 | Infinite-stage well cementation sliding sleeve for preventing cement solidification and assembling and operating method thereof |
-
2010
- 2010-12-23 CN CN2010206853927U patent/CN201915931U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2766561A4 (en) * | 2011-10-11 | 2015-11-18 | Packers Plus Energy Serv Inc | Wellbore actuators, treatment strings and methods |
| US9765595B2 (en) | 2011-10-11 | 2017-09-19 | Packers Plus Energy Services Inc. | Wellbore actuators, treatment strings and methods |
| CN103184849B (en) * | 2011-12-29 | 2016-06-29 | 安东石油技术（集团）有限公司 | Pit shaft isolation ball seat and pit shaft isolation method |
| CN102518419A (en) * | 2012-01-06 | 2012-06-27 | 西南石油大学 | High-efficiency fracturing combined device for multi-stage horizontal well |
| CN102518419B (en) * | 2012-01-06 | 2014-05-07 | 西南石油大学 | High-efficiency fracturing combined device for multi-stage horizontal well |
| CN103306634A (en) * | 2012-03-09 | 2013-09-18 | 中国石油化工股份有限公司 | Sliding-sleeve-type downhole blow-out preventer and application thereof |
| CN102926704A (en) * | 2012-12-03 | 2013-02-13 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Pressure-balancing one-way valve for coiled-tubing layering fracturing |
| CN102926704B (en) * | 2012-12-03 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Pressure-balancing one-way valve for coiled-tubing layering fracturing |
| GB2570209A (en) * | 2017-11-29 | 2019-07-17 | Baker Hughes A Ge Co Llc | Diverter valve for a bottom hole assembly |
| GB2570209B (en) * | 2017-11-29 | 2020-04-08 | Baker Hughes A Ge Co Llc | Diverter valve for a bottom hole assembly |
| CN112780227A (en) * | 2021-02-20 | 2021-05-11 | 中海油能源发展股份有限公司 | Infinite-stage well cementation sliding sleeve for preventing cement solidification and assembling and operating method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |