CN109594922A - The method that water jet bores radial well operations - Google Patents
The method that water jet bores radial well operations Download PDFInfo
- Publication number
- CN109594922A CN109594922A CN201811256567.XA CN201811256567A CN109594922A CN 109594922 A CN109594922 A CN 109594922A CN 201811256567 A CN201811256567 A CN 201811256567A CN 109594922 A CN109594922 A CN 109594922A
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- Prior art keywords
- nozzle
- well
- jet pipe
- broken rock
- boring means
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000005553 drilling Methods 0.000 claims abstract description 27
- 239000011435 rock Substances 0.000 claims abstract description 26
- 239000012530 fluid Substances 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 238000003801 milling Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- 230000009194 climbing Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/06—Cutting windows, e.g. directional window cutters for whipstock operations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The present invention provides a kind of methods that water jet bores radial well operations, comprising the following steps: tubing string connect with positioning and guiding tool and is lowered into well to depth of implements by step 10；Step 20, into well, tripping in casing drilling tool carries out casing sidetracking operation；Step 30, into well, tripping in stratum boring means drills, and keeps the broken rock speed of stratum boring means consistent with feed rate.The beneficial effects of the invention are as follows, the drilling diameter of the embodiment of the present invention is only more bigger than jet pipe outer diameter, both jet pipe unobstructed feeding in pore-forming had been ensure that, again supporting centralizing function can be provided to jet pipe, making jet pipe, radially pore-forming keeps low speed in linear state, steady feeding, to guarantee drilling apart from farther, the effect of final radial direction well construction is best.
Description
Technical field
The present invention relates to conventional oil gas well, coal bed gas wells to be drilled well technical field, and in particular to a kind of water jet brill is radial
The method of well operations.
Background technique
At present at home and abroad in oilfield exploitation industry, water jet bores radial well operation technique and is mainly used for that oil/gas well is secondary to be opened
Hair has significant effect of increasing production to low-permeability oil deposit transformation, the band pollution layer transformation of nearly well.For coal bed gas well, has and improve list
The effect of well production.
Existing water jet bores radial well technology at present, can complete to creep into the stratum around oil/gas well distance 10~
30m or more, the radial hole in aperture 25 to 35mm.It, can be multiple similarly radially in a layer position completion and according to operation needs
Eyelet, or multiple similarly radially eyelets are completed in different layer positions.These radial holes are established between pit shaft and oil-gas reservoir
Effectively connection, improves the mobility of oil-gas reservoir, eliminates nearly well band pollution and adverse effect of the nearly well with pressure drop, improves individual well and produce
Amount.
The domestic and international oil field Duo Jia unit and company's long campaigns water jet drilling radial hole technical research and development.The U.S.
Petrolphysics company is that early stage water jet is radial in the ultrashort radius radial system that 70~eighties of 20th century successfully develops
The representative of drilling technique.Capital equipment needed for the technology completes radial drilling operation includes: ground drill, wirerope truck, pressure
Split vehicle, high-pressure oil pipe, casing firing milling drill bit, re-drill bit, underground anchoring system and whipstock, high-pressure jet spray head etc..The water
Greatest problem present in jet stream radial bore technology is must to carry out casing firing milling and reaming hole, and it is radial to affect this water jet
The operating efficiency of drilling technique.Current external some companies have carried out the research of novel radial bore technology, such as: U.S. Well
Enhancement Serbices (WES) company, Radial Drilling Service (RDS) company and Blast company etc..
Compared with traditional water jet radial bore technology, the essential distinction of novel radial bore technology is: using in novel technique
Novel guider no longer needs to carry out casing firing milling and reaming hole 2 time-consuming processes, but equipment, tool is used directly to exist
It drills on casing and cement sheath, then carries out horizontal segment eye well drilling.Due to being not necessarily to casing section milling and reaming hole, so that novel water-jet
Flow path is largely increased to the operating efficiency of drilling technique.
But no matter the water jet of early stage bores radial well technology or novel radial bore technology, requires to spray using jet stream
Mouth and jet pipe, nozzle and jet pipe link together.Feed rate of the jet pipe on stratum is influenced by pit shaft factor, and it is multiple that power transmits situation
Miscellaneous, nozzle and jet pipe cannot keep linear motion state.
Summary of the invention
The present invention provides a kind of method that water jet bores radial well operations, to reach nozzle and jet pipe can move along a straight line
Purpose.
The technical solution adopted by the present invention to solve the technical problems is: a kind of method that water jet bores radial well operations,
The following steps are included: step 10, tubing string being connect with positioning and guiding tool and is lowered into well to depth of implements；Step 20,
Into well, tripping in casing drilling tool carries out casing sidetracking operation；Step 30, into well, tripping in stratum boring means drills,
Keep the broken rock speed of stratum boring means consistent with feed rate.
Further, in step 30: the broken rock speed and feed rate of stratum boring means are 0.1m/min to 0.2m/
min。
Further, stratum boring means includes being sent into fluid cylinder, jet pipe and nozzle, the work of the front end of jet pipe and feeding fluid cylinder
Stopper rod connection, nozzle is mounted on the front end of jet pipe, and the feed rate of nozzle is the feed rate of stratum boring means, nozzle
Broken rock speed is the broken rock speed of stratum boring means, in step 30: the feeding force of 200N can be provided to jet pipe by being sent into fluid cylinder,
So that the feed rate of nozzle is consistent with the broken rock speed of nozzle.
Further, in step 30: the drilling diameter of nozzle broken rock in the earth formation should be greater than jet size.
Further, jet size 15mm, in step 30: the drilling diameter of nozzle broken rock in the earth formation be 25mm extremely
35mm。
The invention has the advantages that the drilling diameter of the embodiment of the present invention is only more bigger than jet pipe outer diameter, spray both ensure that
Pipe unobstructed feeding in pore-forming, and supporting centralizing function can be provided to jet pipe, making jet pipe, radially pore-forming is kept in linear state
Low speed, it is steady be sent into, to guarantee drilling apart from farther, the effect of final radial direction well construction is best.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the mounting structure schematic diagram of stratum boring means in the present invention.
Appended drawing reference in figure: 1, it is sent into fluid cylinder；2, worming climbing mechanism；3, jet pipe；4, nozzle；5, piston rod；10,
Layer boring means；20, continuous pipe；30, tubing string；40, positioning and guiding tool.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
The embodiment of the invention provides a kind of methods that water jet bores radial well operations, comprising the following steps:
Tubing string 30 connect with positioning and guiding tool 40 and is lowered into well to depth of implements by step 10；
Step 20, into well, tripping in casing drilling tool carries out casing sidetracking operation；
Step 30, into well, tripping in stratum boring means drills, and makes the broken rock speed of stratum boring means and is sent into
Speed is consistent.
As shown in Figure 1, in step 30, descending tripping in stratum boring means 10 into well with continuous pipe 20, carrying out stratum brill
Hole.
Stratum boring means 10 includes to be sent into fluid cylinder 1, worming climbing mechanism 2, jet pipe 3 and nozzle 4.It is sent into 1 He of fluid cylinder
Worming climbing mechanism 2 connects, and jet pipe 3 is connect with the piston rod 5 for being sent into 1 front end of fluid cylinder, and nozzle 4 is mounted on 3 front end of jet pipe.Ground
When layer drilling, bore liquid is pumped into continuous pipe 20 by ground high pressure pumping unit, and jet pipe 3 and nozzle 4 through stratum boring means 10 spray
Jet stream is formed out, and broken rock is carried out to stratum and creeps into form radial hole, radial hole plays guiding and centralizing function to jet pipe, draws
It leads nozzle and creeps into farther distance.
In step 30: the broken rock speed and feed rate of stratum boring means 10 are 0.1m/min to 0.2m/min.
Wherein, jet pipe 3 is flexible pipe, and the feed rate of nozzle 4 is the feed rate of stratum boring means 10, nozzle 4
Broken rock speed is the broken rock speed of stratum boring means 10.In step 30: the feeding of 200N can be provided to jet pipe by being sent into fluid cylinder
Power, so that the feed rate of nozzle is consistent with the broken rock speed of nozzle.
When the broken rock speed of nozzle 4 is greater than the feed rate of jet pipe 3, nozzle 4 can be in a certain rapid lapse of time of stratum eyelet
Excessively injection broken rock, causes eye diameter excessive, is greater than 35mm, the outer diameter than jet pipe 3 is big, and jet pipe 3 can lose radial hole
Guiding and centralizing function are easy to bend in the eyelet for crossing major diameter, are finally hampered, can not continue to drill.Work as spray
When 4 broken rock speed of mouth is less than 3 feed rate of jet pipe, nozzle 4 contradicts eyelet front end, and 3 bending deformation of jet pipe is caused to be hampered, thus
It can not continue to drill.
Drilling diameter is only more bigger than 3 outer diameter of jet pipe in the embodiment of the present invention, both ensure that jet pipe 3 was unobstructed in pore-forming and has sent
Into, and supporting centralizing function can be provided to jet pipe 3, making jet pipe 3, radially pore-forming keeps low speed in linear state, steady feeding,
To guarantee drilling apart from farther, the effect of final radial direction well construction is best.
Preferably, in step 30: the drilling diameter of the broken rock in the earth formation of nozzle 4 should be greater than the diameter of jet pipe 3.
Jet size is 15mm, in step 30: the drilling diameter of nozzle broken rock in the earth formation is 25mm to 35mm.
The embodiment of the present invention is suitable for water jet drilling radial hole operation technique, pollutes to low-permeability oil deposit transformation, nearly well band
Layer transformation has significant effect of increasing production, and improves the well yield of coal bed gas well.It can be improved water jet and bore radial well construction
Efficiency and post-job effect.
The embodiment of the present invention is not limited solely to carry out supporting operation using coiled tubing unit, can also use hollow pumping
Beam hanger carries out supporting operation.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements: the present invention is real
The drilling diameter for applying example is only more bigger than 3 outer diameter of jet pipe, not only ensure that the unobstructed feeding in pore-forming of jet pipe 3, but also can provide jet pipe 3
Supporting centralizing function, making jet pipe 3, radially pore-forming keeps low speed in linear state, steady feeding, to guarantee drilling distance more
Far, the effect of final radial well construction is best.
The above, only specific embodiments of the present invention cannot limit the range that invention is implemented with it, so it is equivalent
The displacement of component, or according to equivalent variations made by the invention patent protection scope and modification, should all still fall within what this patent was covered
Scope.In addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical solution, technical solution with
Use can be freely combined between technical solution.
Claims (5)
1. a kind of method that water jet bores radial well operations, which comprises the following steps:
Tubing string connect with positioning and guiding tool and is lowered into well to depth of implements by step 10；
Tripping in casing drilling tool carries out casing sidetracking operation in step 20, Xiang Suoshu well；
Tripping in stratum boring means drills in step 30, Xiang Suoshu well, make the broken rock speed of the stratum boring means with
Feed rate is consistent.
2. the method that water jet according to claim 1 bores radial well operations, which is characterized in that in the step 30: institute
It states the broken rock speed of stratum boring means and feed rate is 0.1m/min to 0.2m/min.
3. the method that water jet according to claim 1 or 2 bores radial well operations, the stratum boring means includes being sent into
Fluid cylinder, jet pipe and nozzle, the jet pipe are connect with the piston rod of the front end for being sent into fluid cylinder, and the nozzle is mounted on the spray
The front end of pipe, and the feed rate of the nozzle is the feed rate of the stratum boring means, the broken rock speed of the nozzle
For the broken rock speed of the stratum boring means, which is characterized in that in the step 30: the feeding fluid cylinder can be to the spray
Pipe provides the feeding force of 200N, so that the feed rate of the nozzle is consistent with the broken rock speed of the nozzle.
4. the method that water jet according to claim 3 bores radial well operations, which is characterized in that in the step 30: institute
The drilling diameter for stating nozzle broken rock in the earth formation should be greater than the diameter of the jet pipe.
5. the method that water jet according to claim 4 bores radial well operations, which is characterized in that the jet size is
15mm, in the step 30: the drilling diameter 25mm to 35mm of nozzle broken rock in the earth formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811256567.XA CN109594922A (en) | 2018-10-23 | 2018-10-23 | The method that water jet bores radial well operations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811256567.XA CN109594922A (en) | 2018-10-23 | 2018-10-23 | The method that water jet bores radial well operations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109594922A true CN109594922A (en) | 2019-04-09 |
Family
ID=65957869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811256567.XA Pending CN109594922A (en) | 2018-10-23 | 2018-10-23 | The method that water jet bores radial well operations |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984859A (en) * | 2019-11-15 | 2020-04-10 | 中国石油集团长城钻探工程有限公司 | Radial horizontal drilling and sand prevention well completion tool and method |
| CN111706258A (en) * | 2020-06-17 | 2020-09-25 | 中国石油大学(北京) | Traction type hose auxiliary feeding device and method for radial well |
| CN114439435A (en) * | 2022-01-26 | 2022-05-06 | 宝鸡文理学院 | Downhole creeping type power gas lift plunger |
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|---|---|---|---|---|
| WO2008061071A2 (en) * | 2006-11-13 | 2008-05-22 | Alberta Energy Partners | System, apparatus and method for abrasive jet fluid cutting |
| CN101429848A (en) * | 2007-11-06 | 2009-05-13 | 中国石油大学(北京) | Method apparatus and for hydraulic jet side drilling radial branching borehole |
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| CN106837171A (en) * | 2016-12-28 | 2017-06-13 | 中国石油天然气集团公司 | A kind of compact reservoir radial direction boring means external member |
| CN106837172A (en) * | 2016-12-28 | 2017-06-13 | 中国石油天然气集团公司 | A kind of radial well solves the boring method of thin interbed |
| CN108131109A (en) * | 2017-12-15 | 2018-06-08 | 中国石油大学(北京) | Sidetracking radial well window opening tool and method |
-
2018
- 2018-10-23 CN CN201811256567.XA patent/CN109594922A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008061071A2 (en) * | 2006-11-13 | 2008-05-22 | Alberta Energy Partners | System, apparatus and method for abrasive jet fluid cutting |
| CN101429848A (en) * | 2007-11-06 | 2009-05-13 | 中国石油大学(北京) | Method apparatus and for hydraulic jet side drilling radial branching borehole |
| CN104832092A (en) * | 2015-05-18 | 2015-08-12 | 山东科瑞国际油气工程有限公司 | Hydraulic jet sidetracking process |
| CN106837171A (en) * | 2016-12-28 | 2017-06-13 | 中国石油天然气集团公司 | A kind of compact reservoir radial direction boring means external member |
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| CN108131109A (en) * | 2017-12-15 | 2018-06-08 | 中国石油大学(北京) | Sidetracking radial well window opening tool and method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110984859A (en) * | 2019-11-15 | 2020-04-10 | 中国石油集团长城钻探工程有限公司 | Radial horizontal drilling and sand prevention well completion tool and method |
| CN110984859B (en) * | 2019-11-15 | 2021-08-13 | 中国石油天然气集团有限公司 | Radial horizontal drilling and sand prevention well completion tool and method |
| CN111706258A (en) * | 2020-06-17 | 2020-09-25 | 中国石油大学(北京) | Traction type hose auxiliary feeding device and method for radial well |
| CN111706258B (en) * | 2020-06-17 | 2021-07-30 | 中国石油大学(北京) | Traction type hose auxiliary feeding device and method for radial well |
| CN114439435A (en) * | 2022-01-26 | 2022-05-06 | 宝鸡文理学院 | Downhole creeping type power gas lift plunger |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20190409 |