CN101250993A - Horizontal oil well sand-pumping device as well as sand-pumping method thereof - Google Patents
Horizontal oil well sand-pumping device as well as sand-pumping method thereof Download PDFInfo
- Publication number
- CN101250993A CN101250993A CNA2008101039145A CN200810103914A CN101250993A CN 101250993 A CN101250993 A CN 101250993A CN A2008101039145 A CNA2008101039145 A CN A2008101039145A CN 200810103914 A CN200810103914 A CN 200810103914A CN 101250993 A CN101250993 A CN 101250993A
- Authority
- CN
- China
- Prior art keywords
- sand
- piston
- bailing
- valve
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The invention relates to the petroleum machinery technical field, in particular to a bailing device for a horizontal well and a bailing method using the same. The invention provides the bailing device for the horizontal well and the bailing method using the same to solve the problem of sealing property for a check valve in the prior bailing process and the problem of frictions between a pump body of a bailing pump and a bushing and between the pump body of the bailing pump and a coupling, wherein, a drainage orifice is arranged above a vertical segment of a bailing pump, a piston barrel is arranged under the drainage orifice, a piston rod inside the piston barrel is provided with an upper valve, and the lower end of the piston rod is provided with a hard piston and a soft piston; a sand blocking short circuit is arranged under the piston barrel; the front end of the horizontal segment of the bailing pump is provided with a tool for cutting and pushing sands, while the other end of the tool for cutting and pushing sands is provided with a bottom valve and a sand shovel, a valve core and a valve seat of the bottom valve are jointed through a spring; and a centralizer is arranged on the pump body of the horizontal segment of the bailing pump. The bailing device for the oil well has the advantages of excellent sealing property; small friction between the bailing pump and the bushing and between the bailing pump and the coupling; long service life; effective prevention of massive sand particles from entering inside the piston barrel; strong sand pumping property of the piston; and high work efficiency.
Description
Technical field
The present invention relates to the petroleum machinery technical field, be specifically related to a kind of horizontal well sand-bailing equipment and drag for the sand method.
Background technology
In the Oilfield developing process, because loose sand formation cementation intensity is low or the influence of pressing crack construction, sand grains can flow into pit shaft along with formation fluid, causes pit shaft obstruction, down-hole string, instrument and ground installation wearing and tearing aggravation, and causes the oil well reduce or stop production.Generally speaking, adopt water circulation to carry method, the long-pending sand of pit shaft is broken up and take ground to by swiftly flowing liquid.Because the requirement of compatibility, density and the viscosity on sand cleaning fluid and stratum, this sand washing mode very easily cause formation contaminant and ground environment to pollute; For the bigger oil well of formation leakage amount, the hydraulic sand washing mode has certain degree of difficulty, can not finish the sand washing operation sometimes, and the job execution cycle is long, and down-hole accident easily takes place, and the work operations amount is bigger, the cost height.Conventional sand washing process is difficult for going out sand grains, and oil reservoir is polluted; And mechanical sand bucket is according to the operating principle of oil well pump, its power is working rig, oil pipe on the sand bucket is as the line shaft of plunger, following sand sediment pipe is as storage sand pocket, according to the height of sand post, the length of decision storage sand oil pipe, handling oil pipe up and down, directly sand is extracted in the storage sand oil pipe, finishes and drag for the sand operation.When strata pressure is low, oil reservoir is missed when serious, and this technology has bigger advantage.The restriction on the design feature but machinery drags for sand technology, the present range of application of this technology only is confined to Vertical Well, can't directly use horizontal well.
Summary of the invention
In order to solve the existing sealing problem that drags for ball-and-seat in the sand technology, the friction problem between the pump housing of sand bucket and sleeve pipe and the box cupling the invention provides a kind of horizontal well sand-bailing equipment and drags for the sand method, improved the efficient of dragging for sand, saved cost, and desanding is thorough, not polluted reservoir.
In order to achieve the above object, the technical solution used in the present invention is: a kind of horizontal well sand-bailing equipment, above the vertical section of sand bucket, be provided with outage, and the outage below is provided with piston cylinder, piston rod in the piston cylinder is provided with valve, and the lower end of piston rod is provided with hard piston and soft piston; Below piston cylinder, be provided with the sand block short circuit; The horizontal segment front end of described sand bucket is provided with broken sand and pushes away the sand instrument, and the other end that broken sand pushes away the sand instrument is provided with bottom valve and sand shovel, connects with spring between the spool of bottom valve and the valve seat; The described sand bucket horizontal segment pump housing is provided with centralizer.
Above-mentioned centralizer is rubber centralizer or rolling wheel centralizer.
A kind of sand method of dragging for of horizontal well sand-bailing equipment, its method step is as follows:
(1) before each operation, all needs the bottom valve of horizontal segment is carried out the pressure adjustment, can only unidirectionally pass through sand bucket to guarantee the horizontal segment fluid;
(2) be lowered in the process at pipe string, the broken sand of sand bucket front end pushes away the sand instrument and clears up remaining on the casing wall residual sand, and pushes it to and inhale the sand mouth, bottom valve contact sand face, and the weight of horizontal segment is supported by centralizer;
(3) when carrying power oil pipe on the tractor hoist, drive piston rod, soft piston and hard piston and rise, at this moment go up valve and close, following valve is opened, and carries sand and enter sand sediment pipe, and sand in the sand sediment pipe and well liquid are up because sand proportion is bigger, constantly sink, well liquid rises;
(4) when tractor hoist is transferred power oil pipe, drive piston rod, soft piston and hard piston and descend, at this moment to go up valve and open, following valve cuts out, and sand can not be got back in the sleeve pipe, and the top well liquid that does not contain sand, valve and outage are got back to the oil jacket annular space again on the process;
(5) put operation through putting on repeatedly, can realize sand is dragged for into sand sediment pipe, take pit shaft out of by power oil pipe.
Compared with prior art, beneficial effect of the present invention is:
Good airproof performance of the present invention, the friction between sand bucket and sleeve pipe and the box cupling is few, and long service life effectively guarantees can not enter a large amount of sand grains in the piston cylinder, and the sand ability of taking out of piston is strong, high efficiency.
Description of drawings
Fig. 1 is the utility model overall structure schematic diagram.
Reference numeral:
The 1-outage, the 2-piston cylinder, the 3-piston rod, the last valve of 4-, the hard piston of 5-, the soft piston of 6-,
The 7-sand sediment pipe, 8-sand block short circuit, the broken sand of 9-pushes away the sand instrument, the 10-centralizer, the 11-bottom valve,
12-sand shovel, 13-spring, 14-power oil pipe.
The specific embodiment
Below in conjunction with accompanying drawing, structure of the present invention is done detailed description.
Referring to Fig. 1, the invention provides a kind of horizontal well sand-bailing equipment, above the vertical section of sand bucket, be provided with outage 1, outage 1 below is provided with piston cylinder 2, and the piston rod 3 in the piston cylinder 2 is provided with valve 4, and the lower end of piston rod 3 is provided with hard piston 5 and soft piston 6; Below piston cylinder 2, be provided with sand block short circuit 8, the well liquid that comes in the pumping is filtered, can guarantee can not enter a large amount of sand grains in the piston cylinder; The horizontal segment front end of described sand bucket is provided with broken sand and pushes away sand instrument 9, the sand grains on the internal surface of sleeve pipe can be scraped off, and simultaneously transfers in the process residual sand shifted onto at the pipe string and inhales the sand mouth; The pump housing of described sand bucket horizontal segment is provided with centralizer 10, can reduce sand bucket last put put in and friction between sleeve pipe and the box cupling, increase the service life, described centralizer 10 is rubber centralizer or rolling wheel centralizer; The other end that described broken sand pushes away sand instrument 9 is provided with bottom valve 11 and sand shovel 12, connects with spring 13 between the spool of bottom valve 11 and the valve seat.
The sand method of dragging for of the present invention is that its step is as follows:
(1) before each operation, all needs the bottom valve of horizontal segment is carried out the pressure adjustment, can only unidirectionally pass through sand bucket to guarantee the horizontal segment fluid;
(2) be lowered in the process at pipe string, the broken sand of sand bucket front end pushes away the sand instrument and clears up remaining on the casing wall residual sand, and pushes it to and inhale the sand mouth, bottom valve contact sand face, and the weight of horizontal segment is supported by centralizer;
(3) when carrying power oil pipe on the tractor hoist, drive piston rod, soft piston and hard piston and rise, at this moment go up valve and close, following valve is opened, and carries sand and enter sand sediment pipe, and sand in the sand sediment pipe and well liquid are up because sand proportion is bigger, constantly sink, well liquid rises;
(4) when tractor hoist is transferred power oil pipe, drive piston rod, soft piston and hard piston and descend, at this moment to go up valve and open, following valve cuts out, and sand can not be got back in the sleeve pipe, and the top well liquid that does not contain sand, valve and outage are got back to the oil jacket annular space again on the process;
(5) put operation through putting on repeatedly, can realize sand is dragged for into sand sediment pipe, take pit shaft out of by power oil pipe.
Claims (3)
1, a kind of horizontal well sand-bailing equipment is characterized in that: be provided with outage above the vertical section of sand bucket, the outage below is provided with piston cylinder, and the piston rod in the piston cylinder is provided with valve, and the lower end of piston rod is provided with hard piston and soft piston; Below piston cylinder, be provided with the sand block short circuit; The horizontal segment front end of described sand bucket is provided with broken sand and pushes away the sand instrument, and the other end that broken sand pushes away the sand instrument is provided with bottom valve and sand shovel, connects with spring between the spool of bottom valve and the valve seat; The described sand bucket horizontal segment pump housing is provided with centralizer.
2, a kind of horizontal well sand-bailing equipment according to claim 1, it is characterized in that: described centralizer is rubber centralizer or rolling wheel centralizer.
3, the sand method of dragging for of a kind of horizontal well sand-bailing equipment according to claim 1, it is characterized in that: its step is as follows:
(1) before each operation, all needs the bottom valve of horizontal segment is carried out the pressure adjustment, can only unidirectionally pass through sand bucket to guarantee the horizontal segment fluid;
(2) be lowered in the process at pipe string, the broken sand of sand bucket front end pushes away the sand instrument and clears up remaining on the casing wall residual sand, and pushes it to and inhale the sand mouth, bottom valve contact sand face, and the weight of horizontal segment is supported by centralizer;
(3) when carrying power oil pipe on the tractor hoist, drive piston rod, soft piston and hard piston and rise, at this moment go up valve and close, following valve is opened, and carries sand and enter sand sediment pipe, and sand in the sand sediment pipe and well liquid are up because sand proportion is bigger, constantly sink, well liquid rises;
(4) when tractor hoist is transferred power oil pipe, drive piston rod, soft piston and hard piston and descend, at this moment to go up valve and open, following valve cuts out, and sand can not be got back in the sleeve pipe, and the top well liquid that does not contain sand, valve and outage are got back to the oil jacket annular space again on the process;
(5) put operation through putting on repeatedly, can realize sand is dragged for into sand sediment pipe, take pit shaft out of by power oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101039145A CN101250993A (en) | 2008-04-11 | 2008-04-11 | Horizontal oil well sand-pumping device as well as sand-pumping method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101039145A CN101250993A (en) | 2008-04-11 | 2008-04-11 | Horizontal oil well sand-pumping device as well as sand-pumping method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101250993A true CN101250993A (en) | 2008-08-27 |
Family
ID=39954569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101039145A Pending CN101250993A (en) | 2008-04-11 | 2008-04-11 | Horizontal oil well sand-pumping device as well as sand-pumping method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101250993A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817566A (en) * | 2011-09-30 | 2012-12-12 | 南通新诚电子有限公司 | Horizontal well sand bailing device |
| CN103498641A (en) * | 2013-09-24 | 2014-01-08 | 北京恩瑞达科技有限公司 | Sand removing device and method of oil well negative-pressure machine |
| CN107676051A (en) * | 2016-08-02 | 2018-02-09 | 中国石油天然气股份有限公司 | Coal bed gas well annular pressurizing coal powder fishing device and method |
-
2008
- 2008-04-11 CN CNA2008101039145A patent/CN101250993A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817566A (en) * | 2011-09-30 | 2012-12-12 | 南通新诚电子有限公司 | Horizontal well sand bailing device |
| CN103498641A (en) * | 2013-09-24 | 2014-01-08 | 北京恩瑞达科技有限公司 | Sand removing device and method of oil well negative-pressure machine |
| CN107676051A (en) * | 2016-08-02 | 2018-02-09 | 中国石油天然气股份有限公司 | Coal bed gas well annular pressurizing coal powder fishing device and method |
| CN107676051B (en) * | 2016-08-02 | 2020-02-14 | 中国石油天然气股份有限公司 | Coal bed gas well annular pressurizing coal powder fishing device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101250990B (en) | Oil well horizontal sand-pumping device as well as sand-pumping method thereof | |
| CN103807151B (en) | The continuous lifting pump of oil pumper and its lifting method | |
| CN201180521Y (en) | System used for horizontal well sand pumping | |
| CN107676051B (en) | Coal bed gas well annular pressurizing coal powder fishing device and method | |
| CN101250991B (en) | Oil well horizontal sand-pumping device as well as sand-pumping method thereof | |
| CN101250993A (en) | Horizontal oil well sand-pumping device as well as sand-pumping method thereof | |
| CN203879424U (en) | Novel continuous sand removal device for oil and water well | |
| CN102312659A (en) | Pollution-free well workover process for oil field | |
| CN201180525Y (en) | Apparatus used for oil well horizontal sand pumping | |
| CN103696717B (en) | Automatic underground sand bailing device and sand bailing process thereof | |
| CN101250992B (en) | Oil well sand-pumping device as well as sand-pumping method thereof | |
| CN201180523Y (en) | System used for oil well sand pumping | |
| CN201180520Y (en) | Apparatus used for oil well sand pumping | |
| CN203584344U (en) | Sand prevention and well flushing valve for electric pumping wells | |
| CN101275462A (en) | Horizontal well bailing system and method | |
| CN201180524Y (en) | System used for oil well horizontal sand pumping | |
| CN201180522Y (en) | Apparatus used for horizontal well sand pumping | |
| CN101250994B (en) | Oil well sand-pumping system as well as sand-pumping method thereof | |
| RU134984U1 (en) | DEVICE FOR CLEANING BOTTOM AND WELL BORE OF DEPOSITS AND FLOATING WASTE | |
| CN202579126U (en) | Novel oil well pump | |
| CN204041041U (en) | Oil well liquid increasing device | |
| CN1975098A (en) | Self-suction low-pressure absorption well sand flushing technology | |
| CN102817566A (en) | Horizontal well sand bailing device | |
| CN202300321U (en) | Bailing device for horizontal well | |
| CN203476281U (en) | Expanding-type leakage-proof well-flushing packer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080827 |