CN203441430U - Cement squeezing device in horizontal well construction - Google Patents
Cement squeezing device in horizontal well construction Download PDFInfo
- Publication number
- CN203441430U CN203441430U CN201320572250.3U CN201320572250U CN203441430U CN 203441430 U CN203441430 U CN 203441430U CN 201320572250 U CN201320572250 U CN 201320572250U CN 203441430 U CN203441430 U CN 203441430U
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- cup
- packing cup
- leather cup
- central tube
- slips
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Abstract
The utility model provides a cement squeezing device in horizontal well construction. The cement squeezing device comprises an upper joint, a tapered body, a slip, a slip support, an ejector sleeve, a press ring, a rotating ring, a central pipe, a packing cup sealing base pipe, a rubber packing cup and a packing cup fixing nut, the packing cup sealing base pipe is connected with the central pipe, the rubber packing cup is connected to the external diameter of the packing cup sealing base pipe, the expansion direction of the rubber packing cup faces the tail end of the cement squeezing device, and the rubber packing cup is blocked on the packing cup sealing base pipe through the packing cup fixing nut. The cement squeezing device in the horizontal well construction can achieve horizontal segment blocking and cement squeezing, cement of a squeezing segment is prevented from collapsing and leaking, a construction tool string is fixed, different squeezing segments can be changed over flexibly, and meanwhile the cement squeezing device has obvious advantages in positive well washing, negative well washing, misoperation recognition, rubber packing cup protection and the like.
Description
Technical field
The utility model relates to a kind of squeeze method device of horizontal well construction, belongs to field of mechanical technique.
Background technology
In oilfield development process, horizontal well proportion is increasing, but at horizontal well, implement sealing, change in layer and special down-hole construction technology process, often need implement squeezing off construction to net horizontal section, but due to horizontal well architectural characteristic, often occur that cemented pipe column is cemented in horizontal well and even causes up to ten million horizontal wells directly to scrap by cement, causes great economic loss.
Utility model content
The utility model provides a kind of squeeze method device of horizontal well construction, construction technology flexibility and reliability, construction safety is stable, it is connected to water injection of horizontal well mud construction oil pipe lower end, effectively avoid and overcome in conventional levels well Process of Cementing, the fixed firmly cementing practice tubing string of cement bottom horizontal flow sheet, the defect that causes up to ten million horizontal wells directly to be scrapped, or in work progress, be difficult to monitor injection pressure, prevent horizontal segment injected water mudflow from dropping down and form the series of problems such as upper strata cavity, in work progress, can realize and drag long well section squeezing construction according to operation pressure judgement squeezing effect simultaneously.
For solving above technical problem, the utility model provides following technical scheme: a kind of squeeze method device of horizontal well construction, described squeeze method device comprises top connection, bullet, slips, slips support, top cover, pressure ring, central tube, leather cup envelope base tube, rubber cup and leather cup hold-down nut, top connection connects bullet, bullet connects central tube, the taper surface of bullet plays guide slip, realize slips expansion grappling sleeve pipe function, slips end face connects slips support, the slips support top cover that is threaded, described leather cup envelope base tube adopts the central tube that is threaded, rubber cup is connected on the external diameter of leather cup envelope base tube, rubber cup is arranged in parallel successively, rubber cup dimension is towards squeeze method device tail end, rubber cup is plugged in leather cup envelope base tube by leather cup hold-down nut.
Described squeeze method device also comprises leather cup folding and unfolding pipe and change, leather cup folding and unfolding pipe is connected to change, while transferring leather cup folding and unfolding pipe by rubber cup folding and unfolding in the inside of folding and unfolding pipe, in the time of need blocking envelope down to desired depth, in utilization, put and put action, realize change and rotate and switch tracks along central tube keyway, realize rubber cup and discharge leather cup folding and unfolding pipe.
Described central tube external diameter is provided with profile of tooth keyway, and change is provided with serrations, and the two is intermeshing, between change and central tube, for being slidably connected, and changes between serrations groove track.
Described squeeze method device also comprises top cover, pressure ring, centralizer body, spring and brake pad, the below of top cover on centralizer body socket central tube, spring is array, be installed on centralizer body between brake pad, the both sides of central tube, the external diameter two ends of brake pad are suppressed by top cover and pressure ring, and brake pad is pressed on the construction borehole wall under spring action, when construction, realize and drive the slips locking borehole wall or drive change to change the state of taking in, discharging of folding and unfolding pipe and rubber cup.
The squeeze method device of this horizontal well construction that the utility model relates to; this device can be realized horizontal segment card envelope squeezing off; prevent squeezing section cement avalanche leakage; admittedly live operating tool string; can realize flexibly the change of different squeezing sections, even realize and drag squeezing, ensure flexibility and the reliability of construction technology; at aspects such as positive well-flushing, anti-flushing well, maloperation identification, rubber cup protections, there is clear superiority simultaneously, thereby improve greatly the safety of construction.
Accompanying drawing explanation
Fig. 1 is the squeeze method apparatus structure schematic diagram of a kind of horizontal well construction of the utility model.
The specific embodiment
As shown in Figure 1, water injection of horizontal well mud device comprises top connection 1, bullet 2, slips 3, slips support 4, top cover 5, centralizer body 6, spring 7, brake pad 8, pin 9, pressure ring 10, change 11, central tube 12, profile of tooth keyway 13, leather cup folding and unfolding pipe 14, rubber cup 15, leather cup hold-down nut 16 and leather cup envelope base tube 17.Wherein top connection 1 and the lower end screwed connection of horizontal well construction oil pipe, bullet 2, slips 3, slips support 4, centralizer body 6, spring 7, brake pad 8, pin 9, pressure ring 10, change 11 and leather cup folding and unfolding pipe 14 are arranged on central tube 12.In central tube 12 lower ends, connect leather cup envelope base tube 17, at leather cup envelope base tube 17, rubber cup 15 and leather cup hold-down nut 16 are installed respectively.
Squeeze method device also comprises top cover 5, pressure ring 10, brake pad 8, and brake pad 8 is arranged on centralizer body, is provided with many group springs 7 between brake pad 8 and centralizer body 6, and brake pad 8 is fixed between top cover 5 and pressure ring 10.Utilize spring 7 to provide elastic force to convert the frictional force between brake pad 8 and sleeve pipe to, frictional force is the reliable guarantee that ensures that the commutation of put-on and delegated process middle orbit, rubber cup place, discharge.
The utility model compared with prior art tool has the following advantages:
1, adopting rubber cup is that multilayer expansion leather cup envelope is implemented the card envelope in squeezing off process, has improved card envelope reliability, prevents from squeezing off process that cement flows through this to install fixed horizontal well squeezing off tubing string, cause down-hole accident even horizontal well scrap.
2, adopt the long rail release of the long track grappling of slips, short rail cancel system and rubber cup, short rail to place mechanism, prevent that in decentralization process, maloperation pin enters long rail release rubber cup, rubber cup and sleeve friction scratch, now slips by force grappling stop and to transfer.Transfer to precalculated position, put-on and delegated tubing string, can judge that rubber cup discharges successfully and fixed card envelope section by slips anchoring.
3, adopt the long rail release of the long track grappling of slips, short rail cancel system and rubber cup, short rail to place mechanism, can carry out flexibly placing and discharging of rubber cup, flexible conversion card seals and does not block envelope state, also can realize the different change working such as the squeezing of card envelope, positive well-flushing, anti-flushing well.
4, adopting rubber cup is multilayer expansion leather cup envelope, can toward well head, drag along net horizontal section, particularly in well head pressure one regularly, can level pressure is stable drags, and ensures squeezing stability and reliability.
The specific embodiment described in the utility model does not form the restriction to the application's scope; every within the spirit and principle of the utility model design, any modification that one of skill in the art can make, be equal to and replace and within improvement etc. all should be included in protection domain of the present utility model.
Claims (4)
1. the squeeze method device of a horizontal well construction, it is characterized in that, described squeeze method device comprises top connection, bullet, slips, slips support, top cover, pressure ring, central tube, leather cup envelope base tube, rubber cup and leather cup hold-down nut, top connection connects bullet, bullet connects central tube, the taper surface of bullet plays guide slip, realize slips expansion grappling sleeve pipe function, slips end face connects slips support, the slips support top cover that is threaded, described leather cup envelope base tube adopts the central tube that is threaded, rubber cup is connected on the external diameter of leather cup envelope base tube, rubber cup is arranged in parallel successively, rubber cup dimension is towards squeeze method device tail end, rubber cup is plugged in leather cup envelope base tube by leather cup hold-down nut.
2. the squeeze method device of a kind of horizontal well construction according to claim 1, it is characterized in that, described squeeze method device also comprises leather cup folding and unfolding pipe and change, leather cup folding and unfolding pipe is connected to change, while transferring, leather cup folding and unfolding pipe, by rubber cup folding and unfolding in the inside of folding and unfolding pipe, in the time of need blocking envelope, puts in utilization and puts action down to desired depth, realize change and rotate and switch tracks along central tube keyway, realize rubber cup and discharge leather cup folding and unfolding pipe.
3. the squeeze method device of a kind of horizontal well construction according to claim 1, is characterized in that, described central tube external diameter is provided with profile of tooth keyway, change is provided with serrations, the two is intermeshing, between change and central tube, for being slidably connected, and changes between serrations groove track.
4. the squeeze method device of a kind of horizontal well construction according to claim 1, it is characterized in that, described squeeze method device also comprises top cover, pressure ring, centralizer body, spring and brake pad, the below of top cover on centralizer body socket central tube, spring is array, be installed on centralizer body between brake pad, the both sides of central tube, the external diameter two ends of brake pad are suppressed by top cover and pressure ring, brake pad is pressed on the construction borehole wall under spring action, when construction, realize and drive the slips locking borehole wall or drive change to change the state of taking in, discharging of folding and unfolding pipe and rubber cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320572250.3U CN203441430U (en) | 2013-09-16 | 2013-09-16 | Cement squeezing device in horizontal well construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320572250.3U CN203441430U (en) | 2013-09-16 | 2013-09-16 | Cement squeezing device in horizontal well construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203441430U true CN203441430U (en) | 2014-02-19 |
Family
ID=50092490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320572250.3U Expired - Fee Related CN203441430U (en) | 2013-09-16 | 2013-09-16 | Cement squeezing device in horizontal well construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203441430U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912237A (en) * | 2014-04-01 | 2014-07-09 | 四机赛瓦石油钻采设备有限公司 | Cement bearing and retaining unit |
-
2013
- 2013-09-16 CN CN201320572250.3U patent/CN203441430U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912237A (en) * | 2014-04-01 | 2014-07-09 | 四机赛瓦石油钻采设备有限公司 | Cement bearing and retaining unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20200916 |