CN204941402U - Grappling water booster system - Google Patents
Grappling water booster system Download PDFInfo
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- CN204941402U CN204941402U CN201520476356.2U CN201520476356U CN204941402U CN 204941402 U CN204941402 U CN 204941402U CN 201520476356 U CN201520476356 U CN 201520476356U CN 204941402 U CN204941402 U CN 204941402U
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- grappling
- anchor
- pressurizer
- booster system
- tube
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Abstract
The utility model proposes a kind of grappling water booster system, the pressurizer comprising anchor and be fixedly connected with anchor.Anchor comprises body and is located at intrinsic anchor fluke, and anchor fluke can stretch out relative to body surface; Pressurizer comprises exterior tube and the central tube with piston, and central tube is movable to be socketed in exterior tube, and can relative to exterior tube axially-movable.Grappling water booster system of the present utility model, can eliminate the twisting resistance that motor produces coiled tubing, extends coiled tubing application life.Ensure that the pressure of the drill is stablized simultaneously, improve brill plug efficiency and reduce the brill plug time.
Description
Technical field
The utility model relates to oil gas development technology field, particularly relates to a kind of grappling water booster system.
Background technology
At present, the exploitation of unconventionaloil pool mainly improves well yield by staged fracturing of horizontal well technology.Wherein, waterpower pumping bridging plug, perforation, fracturing integrated staged fracturing technique have become unconventionaloil pool and have hidden, the particularly important means of shale oil gas reservoir development.After this technique subsection pressure break completes, in pit shaft, leave bridging plug, ensureing that production of hydrocarbons is unimpeded for recovering pit shaft, needing to bore milling and falling bridging plug.The tubing string of existing brill milling bridging plug comprises: oil pipe working string and continuous oil pipe operation tubing string two kinds.
When using oil pipe to bore milling bridging plug, its ground installation is workover rig.And when using continuous tubing drill milling bridging plug, ground installation is the equipment such as coild tubing unit and supporting crane.Oil pipe needs lower oil tube operation when boring plug operation, requires high, the length and workover rig lower oil tube expends time in Active workings.Oil pipe bores the operation that the installation of well-control equipment in plug process, pressure testing, dismounting and well head are installed, and not only requires high but also there is secondary kill job, can bring the secondary pollution of oil-gas reservoir, affecting fracturing yield increasing effect.The operation of continuous tubing drill plug is that the used time is short by cylinder continuous lower oil tube, and well control safety.After continuous tubing drill plug, directly can carry out test and produce, there is not the pollution problem that secondary kill-job brings, be conducive to the effect playing fracturing yield increasing, also be conducive to protecting oil-gas reservoir.
But tubing string of the prior art exists following problem: the reaction torque power applied coiled tubing when motor bores plug, easily cause the problem that oil pipe shortens application life.Horizontal section length is more and more longer, and the pressure of the drill bored when filling on drilling tool is unstable, causes boring the problem of filling in efficiency and reducing, and enters difficult problem bottom horizontal segment under tubing string.
Utility model content
Technical problem to be solved in the utility model is: enter problem under the tubing string that existing Horizontal Well Drilling plug exists, the pressure of the drill construction is unstable when boring plug problem and the motor problem to the reaction torque power that oil pipe applies when boring plug.
According to one side of the present utility model, provide a kind of grappling water booster system, comprise the anchor and pressurizer that are fixedly connected with.Anchor comprises body and is located at intrinsic anchor fluke, and anchor fluke can stretch out relative to body surface; Pressurizer comprises exterior tube and the central tube with piston, and central tube is movable to be socketed in exterior tube, and can relative to exterior tube axially-movable.In this case, anchor stretches out by anchor fluke and tubing string is anchored to internal surface of sleeve pipe, and then can eliminate the twisting resistance that motor produces oil pipe, extends oil pipe application life.Pressurizer inside center pipe, relative to exterior tube axially-movable top on motor head, can produce a constant lasting thrust to junk mill, and then ensure that stable improve of the pressure of the drill bores plug efficiency.
Further, the first end of pressurizer exterior tube is connected with anchor, and the second end is provided with exterior tube joint, and the inwall of pressurizer exterior tube is provided with the groove that can hold piston; Groove extends to the second end from the center of exterior tube.Thus, the central tube of band piston can load in exterior tube from the second end, and can along groove relative to exterior tube axially-movable.
Further, the length of groove is greater than the length of a bridging plug.Thus, the central tube of pressurizer and the stroke of piston will be greater than the length of a bridging plug, ensure that in the course of work and once just need not can bore whole bridging plug by movable tubing string.
Further, exterior tube joint is tube-like piece, the outer wall mating shapes of its internal via shape and central tube, and is socketed between pressurizer exterior tube and central tube.Preferably, the outer wall shape of exterior tube coupler bore shape and described central tube is octahedra shape.In this case, the torsion of motor can be delivered to anchor by pressurizer, and anchor stretches out anchor fluke under the twisting force of motor, carries out grappling to tubing string.
Further, the tooth of anchor fluke comprises the horizontal tooth and vertical tooth that can produce axial and circumferential anchorage force.The bottom of anchor fluke is provided with elastic component, and the top of anchor fluke is provided with pressing plate and fixture.Particularly, fixture is a screw, with the anchor fluke of difform tooth, and the external surface being arranged at the body of anchor of alternate intervals.Thus, anchor can apply stable anchorage force in tubing string all directions.
Further, anchor is connected by tubing nipple with pressurizer, and tubing nipple is provided with centralizer.Tubing nipple is used for the length adjusting tubing string according to specific needs.Centralizer has the effect of righting tubing string.
Further, the piston of pressurizer is provided with piston seal.Such as, piston seal is sealing ring, and it seals the exterior tube of piston and pressurizer.Under the effect of hydraulic pressure, the central tube with piston can move axially a segment distance relative to exterior tube, thus produces certain thrust to junk mill, ensure that the stable of the pressure of the drill.
Compared with prior art, anchor of the present utility model when motor is started working after tubing string puts in place, by tubing string grappling, can eliminate the twisting resistance that motor produces coiled tubing, and then extends coiled tubing application life.Pressurizer internal piston produces a constant lasting thrust under hydraulic action, and this thrust puts on junk mill, ensure that the pressure of the drill is stablized, and improves the efficiency of boring plug.Grappling water booster system novel structure of the present utility model, is beneficial to applying of continuous tubing drill plug technology, improves the efficiency of unconventionaloil pool Tibetan, the particularly exploitation of shale oil gas reservoir.
Accompanying drawing explanation
Also will be described in more detail the utility model with reference to accompanying drawing based on embodiment hereinafter.Wherein:
Fig. 1 is the schematic diagram of the tubing string of the utility model embodiment;
Fig. 2 is the schematic diagram of the grappling water booster system of the utility model embodiment;
Fig. 3 is the sectional view of the grappling water booster system of the utility model Fig. 2;
Fig. 4 is the schematic diagram of a kind of anchor fluke tooth of the utility model embodiment anchoring device;
Fig. 5 is the schematic diagram of the another kind of anchor fluke tooth of the utility model embodiment anchoring device;
Fig. 6 is the schematic diagram of the pressurizer of the utility model embodiment;
Fig. 7 is a kind of working state schematic representation of the pressurizer of the utility model embodiment; And
Fig. 8 is the another kind of working state schematic representation of the pressurizer of the utility model embodiment.
In the accompanying drawings, identical parts use identical Reference numeral.Accompanying drawing is not according to the ratio of reality.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, tubing string of the present utility model to be connected successively with junk mill 7 by joint 1, bumper jar 2, oscillator 3, grappling water booster system 4, motor head 5, motor 6 and to form.The downstream of oscillator 3 connects grappling water booster system 4, and the upstream of oscillator 3 connects bumper jar 2.Pressurizer one end of grappling water booster system 4 is connected with motor head 5.
Grappling water booster system 4, as shown in Figures 2 and 3, comprise the anchor and pressurizer that are fixedly connected with by tubing nipple 15, tubing nipple 15 is provided with centralizer 16.
Anchor comprises body 11, and stretches out the anchor fluke 12 on surface of body 11 with movable.Be provided with elastic component 13 in the bottom of anchor fluke 12, be provided with pressing plate and fixture 14 at the top of anchor fluke 12.In this case, anchor, after tubing string puts in place, is subject to the torsion of motor when motor is started working, torsional force urges anchor fluke 12 stretches out anchor body 11, and anchor fluke 12 is anchored to internal surface of sleeve pipe, and then by tubing string grappling.Here need to further illustrate, the tooth of anchor fluke 12 has two kinds of structures, as shown in Figure 4 and Figure 5.The tooth of anchor fluke 12 comprises horizontal tooth and vertical tooth.Horizontal tooth can produce axial anchorage force, and vertical tooth can produce circumferential anchorage force, and then can eliminate the twisting resistance that motor produces coiled tubing, the application life of prolongation coiled tubing.
Pressurizer comprises exterior tube 17, central tube 19 and piston 22, and piston 22 is fixedly connected on one end of central tube 19.As shown in Figure 3, central tube 19 and piston 22 is movable is socketed in exterior tube 17, and can relative to exterior tube 17 axially-movable.In this case, pressurizer internal piston 22 and central tube 19 move axially certain distance relative to exterior tube 17 under hydraulic action, and produce a constant lasting thrust to drill bit.Thrust puts on junk mill 7, ensure that the stable of the pressure of the drill, and then reduces and bore the plug time and improve and bore plug efficiency.
Preferably, piston 22 is provided with piston packing 18, and the inwall of exterior tube 17 is provided with the groove 22 ' that can hold piston 22 and move.The length of groove 22 ' is greater than the length of a bridging plug, and pressurizer piston 22 stroke can be made thus to be greater than the length of a bridging plug, and this ensure that need not movable tubing string, once just can bore whole bridging plug.
The torsion produced during in order to be started working by motor 6, be delivered to anchor one end promotion anchor fluke 12 by motor head 5 from pressurizer one end and stretch out anchor body 11, the lower end of pressurizer exterior tube is connected with exterior tube joint 20.Particularly, exterior tube joint 20 is socketed between exterior tube 17 and central tube 19, and the outer wall shape of central tube 19 and the internal via shape of exterior tube joint 20 match, and as shown in Figure 6, are octahedra shape.
In addition, one end that pressurizer central tube 19 is connected with motor head 5 is provided with central tube lower contact 21, so that pressurizer applies pressure to motor 6.As shown in Figure 7 and Figure 8, the duty of pressurizer is divided into two kinds, and the first state is the state that piston 22 does not stretch out, and the second state is the state that piston 22 reaches range.
Below the workflow of tubing string of the present utility model is described, mainly comprises the steps.
First, junk mill 7, motor 6, motor head 5, grappling water booster system 4, oscillator 3, bumper jar 2 and joint 1 is connected according to the concrete structure of design of string pipe successively on ground.Wherein, each instrument can directly be threaded connection.Afterwards, brill plug instrument (tubing string) and lubricator are connected to well head and first bridging plug place at the bottom of lower going-into-well.After tubing string puts in place, starter 6 bores mill bridging plug, and now grappling water booster system 4 is subject to the torsion of motor 6.Torsional force urges anchor fluke 12 stretches out anchor body 11, and anchor fluke 12 is anchored to internal surface of sleeve pipe, and then by tubing string grappling.
Grind off bridging plug along with motor 6 bores gradually, pressurizer inside center pipe 19 and piston 22 can be vacillated dynamic downwards relative to exterior tube 17 under hydraulic action, produce a constant lasting thrust to junk mill 7, to ensure that the pressure of the drill is stablized.The range of stretching out pressurizer due to central tube 19 is greater than the length of a bridging plug, therefore ensure that bore in honed journey need not movable tubing string, once just can bore whole bridging plug.
After brill grinds off first bridging plug, repeat above step, bore except each bridging plug follow-up successively, until bridging plug all bores and removes in pit shaft.Here it should be noted that, oscillator 3 can be started if enter in process under tubing string to be hampered, eliminate and to enter frictional resistance in process under coiled tubing so that tubing string is lowered into position.Finally, when bridging plug all bore remove after tubing string is tripped out, similarly, if if tubing string trip out process meet card, start bumper jar 3 can remove jam.
Although be described the utility model with reference to preferred embodiment, when not departing from scope of the present utility model, various improvement can be carried out to it and parts wherein can be replaced with equivalent.Especially, only otherwise there is structural hazard, the every technical characteristic mentioned in each embodiment all can combine in any way.The utility model is not limited to specific embodiment disclosed in literary composition, but comprises all technical schemes fallen in the scope of claim.
Claims (8)
1. a grappling water booster system, is characterized in that, the pressurizer comprising anchor and be fixedly connected with described anchor;
Wherein, described anchor comprises body and is located at intrinsic anchor fluke, and described anchor fluke can stretch out relative to described body surface; Described pressurizer comprises exterior tube and the central tube with piston, and described central tube is movable to be socketed in described exterior tube, and can relative to described exterior tube axially-movable.
2. grappling water booster system according to claim 1, is characterized in that, the first end of described pressurizer exterior tube is connected with anchor, and the second end is provided with exterior tube joint, and the inwall of described pressurizer exterior tube is provided with the groove that can hold described piston; Described groove extends to the second end from the center of exterior tube.
3. grappling water booster system according to claim 2, is characterized in that, the length of described groove is greater than the length of a bridging plug.
4. grappling water booster system according to claim 2, is characterized in that, described exterior tube joint is tube-like piece, the outer wall mating shapes of its internal via shape and described central tube, and is socketed between described pressurizer exterior tube and described central tube.
5. grappling water booster system according to claim 4, is characterized in that, the outer wall shape of described exterior tube coupler bore shape and described central tube is octahedra shape.
6. grappling water booster system according to claim 1, is characterized in that, the tooth of described anchor fluke comprises the difform tooth that can produce axial and circumferential anchorage force.
7. grappling water booster system according to claim 6, is characterized in that, the tooth of described anchor fluke comprises horizontal tooth and vertical tooth.
8. grappling water booster system according to claim 1, is characterized in that, described anchor is connected by tubing nipple with described pressurizer, and described tubing nipple is provided with centralizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520476356.2U CN204941402U (en) | 2015-06-30 | 2015-06-30 | Grappling water booster system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520476356.2U CN204941402U (en) | 2015-06-30 | 2015-06-30 | Grappling water booster system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204941402U true CN204941402U (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520476356.2U Active CN204941402U (en) | 2015-06-30 | 2015-06-30 | Grappling water booster system |
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| CN (1) | CN204941402U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911103A (en) * | 2020-08-11 | 2020-11-10 | 中国石油天然气集团有限公司 | Hydraulic booster and use method thereof |
-
2015
- 2015-06-30 CN CN201520476356.2U patent/CN204941402U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911103A (en) * | 2020-08-11 | 2020-11-10 | 中国石油天然气集团有限公司 | Hydraulic booster and use method thereof |
| CN111911103B (en) * | 2020-08-11 | 2023-10-20 | 中国石油天然气集团有限公司 | Hydraulic booster and use method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |