CN101240696A - Water injection well high pressure well-washing system - Google Patents
Water injection well high pressure well-washing system Download PDFInfo
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- CN101240696A CN101240696A CNA2008100851253A CN200810085125A CN101240696A CN 101240696 A CN101240696 A CN 101240696A CN A2008100851253 A CNA2008100851253 A CN A2008100851253A CN 200810085125 A CN200810085125 A CN 200810085125A CN 101240696 A CN101240696 A CN 101240696A
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Abstract
A water injection well high pressure washing well system resolves the difficult problem for washing high pressure water injection well. Throttle controlling component of the system is used for controlling the outlet flux, maintaining well pressure, preventing overflow big, increasing washing well pressure, and adopting increasing pressure by in site high pressure pump vehicle, at the same time adopting high pressure filtering component for preventing jamming water channel after dust is out, adopting the type which is put into the blow-down pit and then put back to preventing that the return water flows into the return pipe and damages the return pipe net directly. The present invention resolves the difficult problem for washing high pressure water injection well, and most of parts can fixed on vehicle. The advantage of the invention is: vehicle mounted transport, automotive flexible, safe high-efficiency, capable of repeating use in various well, less input, quick returns, economical and practical.
Description
Technical field:
The present invention relates to a kind of water injection well high pressure well-washing system, be particularly useful for solving the whole system of the well-flushing of high oil field water injection well.
Background technology:
At present, no matter known water injection well in oil fields well-flushing low pressure water injection well or high-pressure water injection well all are common flow process well-flushings, do not have supporting well-flushing system, well-flushing pressure is normal pressure, returns water outlet and directly enters the low pressure return pipe net.And high-pressure water injection well bottom pressure height, overflow are big, well-flushing like this, because well-flushing pressure is lower, return pipe net pressure is lower, the high-pressure water injection well bottom pressure is gushed, and not only may damage well head and pipeline, and because abrupt pressure reduction, formation sand production, destroy earth formation, be easy to sand and bury stratum and tubing string, also may cause sleeve pipe to damage.These accidents occur, often mean that water injection well scraps.Therefore, high-pressure water injection well well-flushing like this not only can't satisfy the well-flushing needs of high-pressure water injection well, more threatens the safety of stratum and pit shaft.Helplessly, have to prolong time between well-flushings or clear-cut just well-flushing not, consequences such as water quality deterioration, surface line fouling, down-hole string fouling, sleeve pipe fouling, formation blockage also just occur thereupon, the serious accidents such as card tubing string, sleeve pipe damage that also can cause, damage well, loss reserves, need run in the opposite direction with exploitation.
Summary of the invention:
The present invention relates to a kind of water injection well high pressure well-washing system, be particularly useful for solving the whole system of the well-flushing of high oil field water injection well.
The object of the present invention is achieved like this: the high-pressure water injection well well-flushing needs higher well-flushing pressure, reasonably well-flushing discharge capacity, the rational parameter combinations of spillway discharge, reaches not only well-flushing but also the purpose that accidents happened.Throttling Control Component in this system is used for controlling rate of discharge, keep wellbore pressure, prevent that spillway discharge is excessive, the auxiliary well-flushing pressure that improves, pressure-raising adopts the on-the-spot pressure-raising of high pressure pump truck, simultaneously, adopts the high-pressure filteration assembly, prevent that dirt from developing the stifled throttling Control Component in back, adopt the mode of putting into blow-down pit earlier, reclaiming again to prevent to return water outlet and directly advance return pipe net damage return pipe net.
The invention has the beneficial effects as follows: the present invention efficiently solves a high-pressure water injection well well-flushing difficult problem, and and most of parts can be fixed on the vehicle, vehicle-mounted transportation, maneuverability, safe and efficient, can reuse by many wells, small investment, instant effect, economical and practical have the excellent development prospect.
Description of drawings:
The present invention is further described below in conjunction with drawings and Examples:
Fig. 1: flow process principle schematic of the present invention.
Among the figure: 1, water feeder; 2, high pressure pump truck; 3, intake condition admission, sampling part; 4, the wellhead assembly of former water injection well; 5, outlet high-pressure sampling gate; 6, high-pressure filteration assembly; 7, outlet parameter admission part; 8, throttling Control Component; 9, blow-down pit; 10, sewage pumping equipment; 11, pressure meter; 12, High-pressure watermeter; 13, high-pressure sampling gate; 14, high pressure gate; 15, high pressure filter; 16, throttling controller.
The specific embodiment:
This system and device is made up of feedwater, pressure-raising part, intake condition admission, sampling part, injection well head assembly, outlet high-pressure sampling gate, high-pressure filteration assembly, outlet parameter admission part, throttling Control Component and sewage recovery section successively.Below be the composition and the effect of each several part:
One, feedwater, pressure-raising partly are made up of water feeder (1) and high pressure pump truck (2).Water feeder can have a plurality of, and the high pressure pump truck also can have many, is as the criterion to satisfy actual needs.Effect: 1, guarantee that well-flushing water quality meets the requirements: the quality of well-flushing water water quality directly influences the quality of well-flushing quality, and the well-flushing water that continues to provide qualified is the prerequisite and the guarantee of effective well-flushing.Qualified well-flushing water can also can be transported by tank car from main line, and the scene can add required medicament as required, fully satisfies the well-flushing needs.2, progressively, reasonably pressure-raising, carry discharge capacity, control spillway discharge, satisfy the well-flushing needs.
Two, intake condition admission, sampling part: intake condition admission part (3) is by being made up of pressure meter (11), High-pressure watermeter (12), high-pressure sampling gate (13), and High-pressure watermeter not only requires to show total flow, and requirement can show the moment flow; Be convenient to monitoring contrast changes in flow rate, pressure meter requires shatter-proof; The high-pressure sampling gate can not superpressure, and switch is flexible.Effect: 1, parameter data such as admission pressure, flow; 2, import water quality sample analysis; 3, in case of necessity from the emptying of high-pressure sampling gate, pressure release.
Three, the wellhead assembly of former water injection well (4).The effect: can satisfy the well-flushing needs and get final product, but not superpressure, be convenient to the connection.
Four, outlet high-pressure sampling gate (5) is that single high-pressure sampling gate has been installed.Effect: 1, carry out the analysis of water quality sample examination to returning water outlet, whether checking reaches the well-flushing requirement; 2, be used for emptying, pressure release in case of necessity.
Five, high-pressure filteration assembly, high-pressure filteration assembly (6) is composed in parallel by a plurality of high pressure filters (15), and is provided with standby high pressure filter, fully guarantees filter effect, prevent to interrupt because of filtering insufficient well-flushing that causes, all there is high pressure gate at the high pressure filter two ends, are used to close down enable strainer, when the strainer that is using breaks down, can enable reserve filter at once, and the fault filtering device is inactive, maintenance, guarantee that well-flushing is unaffected, do not go out security incident.Effect: 1, water outlet impurity is returned in filtration, prevents that impurity from entering next link; 2, parallel component is guaranteed well-flushing efficient, quality and safety.
Six, outlet parameter admission part (7) is made up of High-pressure watermeter (12) and pressure meter (11).Effect: similar with intake condition admission part, the two contrast can be determined spillway discharge, determines whether well-flushing is normal, whether takes the foundation of control measure.
Seven, throttling Control Component, throttling Control Component (8) is to be formed in parallel by a plurality of throttling controllers (16), standby throttling controller is also arranged, each throttling controller throttling capacity can have difference, can control and adjust, can be the intelligent apparatus that links with outlet parameter admission part, also can be the water nozzle controlling organization, before each throttling controller high pressure gate is arranged, closing down of throttling controller of control enabled.Effect: 1, control outlet discharge capacity; 2, decompression prevents from that the shaft bottom high pressure from gushing to have an accident.
Eight, sewage recovery section: the sewage recovery section is made up of blow-down pit (9), sewage pumping equipment (10).Form by one or more blow-down pits and the equipment that the sewage pumping is walked, pipe network specifically.Return water outlet and still have equivalent discharge and pressure through behind the throttling Control Component, and the throttling Control Component machinery may to occur unexpected, if directly advance return pipe net, may badly damaged return pipe net, cause environment pollution or security incident.Therefore, first emptying, to reclaim be the mode of the safest, science again.Blow-down pipe must fix in accordance with regulations in strictness, and above ground portion must be made earth anchor and reinforce.Effect: 1, intuitively understand well washing effect; 2, guarantee safe construction; 3, avoid contaminated environment.
The device critical piece of forming system of the present invention can be fixed on the vehicle, vehicle-mounted transportation, and maneuverability, and can repeat many wells and use.
Use the workflow of this system and device: 1, earnestly implement scene, rectification scene, make it to reach construction requirement, simultaneously, conscientious repair apparatus; 2, stop annotating, the refluence journey connects each parts, and the high-pressure section pressure testing is qualified with 15 minutes no seepage and no leakages under former water injection pressure.3, refluence journey begins to control well-flushing.At first to provide qualified well-flushing water continuously with guaranteeing both quality and quantity; Secondly, progressively, reasonably control flow, spillway discharge per hour is not more than 5 sides, and the stratum must not absorb water; The 3rd, discharge capacity is ascending, follows the tracks of closely, conscientious recording parameters data and sample examination result; The 4th, it is qualified reaching import and export water quality consistent; 4, well-flushing qualified after, control outlet earlier during ending, control import again, progressively reasonably control discharge capacity, spillway discharge, forbid to receive suddenly the water step-down; 5, remove parts successively, forbid contaminated environment, harm personal safety, damage equipment; 6, refluence journey, the normal water filling of becoming a full member.
Claims (7)
1, water injection well high pressure well-washing system is characterized in that: connected to form by feedwater, pressure-raising part, intake condition admission, sampling part (3), former water injection well wellhead assembly (4), outlet high-pressure sampling gate (5), high-pressure filteration assembly (6), outlet parameter admission part (7), throttling Control Component (8) and sewage recovery section.
2, a kind of water injection well high pressure well-washing system according to claim 1 is characterized in that: qualified well-flushing water can also can be transported by tank car from main line, and the scene can add required medicament, the on-the-spot pressure-raising of pressure-raising employing high pressure pump truck as required.
3, a kind of water injection well high pressure well-washing system according to claim 1 is characterized in that: intake condition admission (3), sampling part are made up of pressure meter (11), High-pressure watermeter (12), high-pressure sampling gate (13).
4, water injection well high pressure well-washing system according to claim 1 is characterized in that: high-pressure filteration assembly (6) is to be composed in parallel by a plurality of high pressure filters (15).
5, water injection well high pressure well-washing system according to claim 1 is characterized in that: the throttling Control Component is to be composed in parallel by a plurality of throttling controllers (16).
6, water injection well high pressure well-washing system according to claim 1 is characterized in that: the sewage recovery section is made up of blow-down pit (9), sewage pumping equipment (10), and equipment, the pipe network of being walked by one or more blow-down pits and sewage pumping formed specifically.
7, water injection well high pressure well-washing system according to claim 1 is characterized in that: at first will provide qualified well-flushing water continuously with guaranteeing both quality and quantity; Secondly, progressively, reasonably control flow, spillway discharge, spillway discharge per hour is not more than 5 sides, and the stratum must not absorb water; The 3rd, discharge capacity is ascending, follows the tracks of closely; After well-flushing was qualified, control earlier exported, controls import again during ending, progressively reasonably controls discharge capacity, spillway discharge, forbids to receive suddenly the water step-down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100851253A CN101240696A (en) | 2008-03-21 | 2008-03-21 | Water injection well high pressure well-washing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100851253A CN101240696A (en) | 2008-03-21 | 2008-03-21 | Water injection well high pressure well-washing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101240696A true CN101240696A (en) | 2008-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100851253A Pending CN101240696A (en) | 2008-03-21 | 2008-03-21 | Water injection well high pressure well-washing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101240696A (en) |
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2008
- 2008-03-21 CN CNA2008100851253A patent/CN101240696A/en active Pending
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Open date: 20080813 |