CN109424364A - A kind of well mouth of oil well sampler and decompressor and sampling method - Google Patents
A kind of well mouth of oil well sampler and decompressor and sampling method Download PDFInfo
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- CN109424364A CN109424364A CN201710776668.9A CN201710776668A CN109424364A CN 109424364 A CN109424364 A CN 109424364A CN 201710776668 A CN201710776668 A CN 201710776668A CN 109424364 A CN109424364 A CN 109424364A
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- ball
- valve body
- decompressor
- seat
- outer tube
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
Abstract
The invention discloses a kind of well mouth of oil well sampler and decompressors and sampling method, sampler includes decompressor, sampling bottle, the decompressor outlet is connect with sampling bottle import, it further include ball-and-seat, ball-and-seat opening and closing device, the ball-and-seat opening and closing device includes outer tube, screw rod, nut, mandril, the screw rod is located at outer tube, mandril is arranged in screw front end, the valve ball of mandril connection ball-and-seat, ball-and-seat connects wellhead ground process pipeline, screw rod and nut are cooperatively connected, nut is blocked in outer tube back-end, the valve body of outer tube front end connection ball-and-seat, fluid flow outlet is opened up on the outer tube tube body, the decompressor upper end connecting fluid outflux.The wellhead ground process pipeline, ball-and-seat, outer tube, decompressor, sampling bottle are sequentially communicated.The resulting fluid sample that the present invention obtains, can be more really close to shaft bottom heterogeneous fluid；This method keeps sampling operation process safer simultaneously.
Description
Technical field
The present invention relates to oil exploitation technology, specifically a kind of well mouth of oil well sampler and decompressor and sampling
Method.
Background technique
The physical parameter of formation fluid is evaluation oil-gas reservoir reserves very important parameter, which is by laboratory
Analysis acquisition is carried out to formation fluid sample, therefore the quality of sample directly decides the correctness of the hydrocarbon reservoir evaluation.Mesh
Preceding well mouth of oil well sampling mostly uses traditional straight-line sampling method, and this method is one lock of installation on wellhead ground process pipeline
Door, by regulating gate, into sampler barrel, straight-line is sampled, and sampler barrel is open.The sampling method is put due to being similar to
Spray formula handles without decompression, cooling, closed etc., the splash of liquid or gas is easily caused in sampling process；Not only sample loses
Authenticity, accuracy are gone, and the hidden danger of health, safe and environment-friendly etc. will be present in site operation personnel in operation.
Especially in steam-stimulated well and vapour driving oil recovery oil well, the security risks such as hurt sb.'s feelings there are sampling under high temperature, hyperbaric environment.
Decompressor is inlet pressure to be reduced to the outlet pressure of a certain needs, and by medium itself by adjusting
Energy makes outlet pressure automatically keep stable valve.From the viewpoint of hydrodynamics, decompressor is that a local resistance can
With the restricting element of variation, i.e., by changing orifice size, changes the kinetic energy of flow velocity and fluid, different pressure is caused to damage
It loses, to achieve the purpose that decompression.Then by the adjusting of control and regulating system, make the fluctuation of downstream pressure and spring force phase
Balance, keeps constant downstream pressure in certain error range.
There are the keywords such as bar, oil recovery, application number 200910236673.6 by retrieval, publication date 2014-11-26 is disclosed
A kind of system carrying out Oil Field sampling, which is characterized in that the system comprises well head gas source, valve group, drier, pipelines
And sampler；The sampler includes sampling valve, sampling bottle and decompressor；The sampling bottle both ends are threadedly coupled
Sampling valve is stated, and the outer of the sampling valve is connected as the connection of external screw thread bite type；The decompressor and described sampling bottle one end
Sampling valve be connected, the decompressor is used to depressurize and sample introduction to sampling bottle mesohigh gas；The decompressor
Including outer defeated port input, the outer defeated port input is connect with external detector；The outer defeated port input is bite type connection
Pipeline dead angle is eliminated in port；The decompressor includes safety valve structure, and the safety valve structure includes safety valve, gas
Circuit and sour gas neutralization pond；When adjusting pressure is more than permissible value 4MPa or the decompressor is out of order, the safety
Valve is opened, and gas is drained into the sour gas neutralization pond by the gas return path of safety；The decompressor also wraps
Rotating handle, compressed spring, cushion block, diaphragm, mandril and valve are included；Described compressed spring one end is connect with rotating handle, separately
One end resists the cushion block, and the cushion block is connected by the diaphragm, mandril and valve；By shaking rotating handle, bullet is oppressed
Power is simultaneously conducted to the mandril by spring, and band opens valve；The other side of the valve is also equipped with return spring；It is filled in the decompression
Set the high pressure gauge and low-pressure meter for being additionally provided with and reading pressure data；The valve latus rectum range 4 of the sampling valve and decompressor
~5mm；All parts in the sampler, the material including decompressor use the stainless steel material of sulfur resistive, and sampling bottle
Upper pressure limit be 35MPa；The well head gas source is entered in sampler by the control of valve by drier, the sampling
The valve at device both ends is to be threadedly coupled with the connection of sampling bottle, and the connection of the well head gas source and outer defeated pipeline is screw thread company
It connects, the connection relationship between remaining part is connected using bite type；The valve group includes gas source sample tap valve, the first valve
Door, the second valve, third valve and the 4th valve；The well head gas source, gas source sample tap valve, the first valve, drier,
Second valve, sampling bottle, third valve, the 4th valve and sour gas neutralization pond are sequentially connected.
Although technology disclosed above also includes decompressor, whole technical solution, the technical issues of solving, beneficial to effect
Fruit etc. is all different, and any technical inspiration is also not present.
Summary of the invention
The purpose of the present invention is to provide a kind of well mouth of oil well sampler and decompressor and sampling method, by using
The resulting fluid sample that sampling method of the present invention obtains, can be more really close to shaft bottom heterogeneous fluid, it is ensured that sample
Closer to accuracy, authenticity；This method makes sampling operation process more conveniently, safely simultaneously.
In order to achieve the above objectives, present invention employs following technical solution, a kind of well mouth of oil well samplers, including subtract
Pressure device, sampling bottle, the decompressor outlet are connect with sampling bottle import, further include ball-and-seat, ball-and-seat opening and closing device, institute
Stating ball-and-seat opening and closing device includes outer tube, screw rod, nut, mandril, and the screw rod is located at outer tube, screw front end setting top
Bar, mandril connect the valve ball of ball-and-seat, and ball-and-seat connects wellhead ground process pipeline, and screw rod and nut are cooperatively connected, nut envelope
Outer tube back-end is got lodged in, outer tube front end connects the valve body of ball-and-seat, opens up fluid flow outlet on the outer tube tube body；The decompression dress
It sets including small-diameter inlet pipe, major diameter reducing valve body, small-diameter inlet pipe upper end connects the fluid flow outlet of outer tube, under
End connects the major diameter reducing valve body upper end center hole, and the internal diameter of the major diameter reducing valve body is greater than small-diameter inlet pipe
Internal diameter, the major diameter reducing valve body inside setting bending turnover runner.
The wellhead ground process pipeline, ball-and-seat, outer tube, decompressor, sampling bottle are sequentially communicated.
Sampling switch is set between the decompressor and sampling bottle.
The sampling bottle is double-layer thermos flask.
Manual rocking handle is arranged in the rear end of the screw rod.
Multiple interlaced baffles are arranged in the major diameter reducing valve body inner wall, and baffle has a fixing end and one
Free end, in two adjacent baffles, the fixing end of one of baffle is fixed on the left inside wall of major diameter reducing valve body, freely
There are runner gaps between end and the right inner wall of major diameter reducing valve body, and the fixing end of another baffle is fixed on major diameter decompression
The right inner wall of valve body, there are runner gap, the mutual skies of all baffles between free end and the left inside wall of major diameter reducing valve body
Between form bending turnover runner, baffle free end setting tiltedly upwarps end plate.
In order to reach above-mentioned another object, present invention employs following technical solution, a kind of well mouth of oil well sampler use
Decompressor, the decompressor includes small-diameter inlet pipe, major diameter reducing valve body, baffle, the small-diameter inlet pipe
Upper end connects the fluid flow outlet of outer tube, and lower end connects the major diameter reducing valve body upper end center hole, the major diameter decompression
The internal diameter of valve body is greater than the internal diameter of small-diameter inlet pipe, setting bending turnover runner inside the major diameter reducing valve body；It is described
Multiple interlaced baffles are arranged in major diameter reducing valve body inner wall, and baffle has a fixing end and a free end, two
In a adjacent baffle, the fixing end of one of baffle is fixed on the left inside wall of major diameter reducing valve body, free end and major diameter
There are runner gaps between the right inner wall of reducing valve body, and the fixing end of another baffle is fixed in the major diameter reducing valve body right side
Wall, there are runner gap between free end and the left inside wall of major diameter reducing valve body, the mutual space of all baffles forms curved
Song turnover runner, the baffle free end setting tiltedly upwarp end plate.
In order to reach above-mentioned another object, present invention employs following technical solution, a kind of well mouth of oil well sampling method, from
When well mouth of oil well is sampled, switch, the sampling switch of sampling bottle itself are successively opened first, is rotated further by manual rocking handle；It utilizes
The rotation lead-screw of manual rocking handle advances, and the mandril of screw front end opens the valve ball of ball-and-seat, ball-and-seat is made to be in opening state
State；Fluid enters outer tube by ball-and-seat from wellhead ground process pipeline at this time, decompressor is flowed by outer tube, by decompression
Enter sampling bottle after device, i.e. sample is arrived in admission.When sampling is completed, first rotation manual rocking handle, the mandril of screw front end is moved back to
Contracting, completely closes to ball-and-seat, then successively closes the switch of sampling switch, sampling bottle itself, completes entire sampling operation；If
Multiple samples are needed, are sampled using same process.
Compared to the prior art, the invention has the following advantages:
1, decompressor slows down impacting with high pressure, reduces temperature, improves the safety of operation.Decompressor be suitable for gas,
The decompression of liquid, gas-liquid mixture fluid, is not only able to satisfy room temperature fluid, the height being also able to satisfy under the conditions of steam soak or steam drive
Warm fluid.Decompression cool principle: 1. bending turnover runner extends runner, reduces pressure, while tiltedly upwarping end plate raises fluid
It falls again, more extends process of the fluid on runner.2. baffle and the oblique end plate that upwarps increase fluid along journey flow resistance.
3. fluid enters major diameter reducing valve body from small-diameter inlet, dilatation antihypertensive effect is played.
2, sealable double-layer thermos flask is as sampling container, it is ensured that sample is closer to accuracy, authenticity.
3, the valve ball of ball-and-seat is closed in manipulation screw top open and close, realizes ball-and-seat opening and closing, and operator takes far from hot environment
Sample is safer, conveniently.
Detailed description of the invention
Fig. 1 installs structural schematic diagram when not sampling for a kind of well mouth of oil well sampler of the present invention；
Fig. 2 is a kind of structural schematic diagram when installing sampling of well mouth of oil well sampler of the present invention.
In figure: wellhead ground process pipeline 1, ball-and-seat 2, outer tube 3, screw rod 4, nut 5, manual rocking handle 6, decompressor 7,
Sampling switch 8, sampling bottle 9；Small-diameter inlet pipe 10, major diameter reducing valve body 11, baffle 12, bending turnover runner 13, tiltedly on
Stick up end plate 14.
Specific embodiment
Detailed description for the present invention and technology contents, cooperation Detailed description of the invention is as follows, however attached drawing is only to refer to and say
It is bright to be used, it is not intended to limit the present invention.
As shown in attached drawing 1, Fig. 2, a kind of well mouth of oil well sampler, including decompressor 7, sampling bottle 9, the decompression dress
It sets outlet to connect with sampling bottle import, further includes ball-and-seat 2, ball-and-seat opening and closing device, the ball-and-seat opening and closing device includes outer
Pipe 3, screw rod 4, nut 5, mandril, the screw rod are located at outer tube, and mandril is arranged in screw front end, and mandril connects the valve of ball-and-seat
Ball, ball-and-seat 2 connect wellhead ground process pipeline 1, and screw rod 4 and nut 5 are cooperatively connected, and nut is blocked in 3 rear end of outer tube, outer tube
Front end connects the valve body of ball-and-seat, and fluid flow outlet, 7 upper end connecting fluid of the decompressor outflow are opened up on the outer tube
Mouthful.The wellhead ground process pipeline, ball-and-seat, outer tube, decompressor, sampling bottle are sequentially communicated.It the decompressor and takes
Sampling switch 8 is set between sample bottle.The decompressor is decompressor, and the sampling bottle is double-layer thermos flask.The screw rod
Rear end be arranged manual rocking handle 6.
A kind of decompressor of well mouth of oil well sampler, the decompressor includes small-diameter inlet pipe 10, big straight
Diameter reducing valve body 11, baffle 12, small-diameter inlet pipe upper end connect the fluid flow outlet of outer tube, and lower end connection is described big straight
Diameter reducing valve body upper end center hole, the internal diameter of the major diameter reducing valve body is greater than the internal diameter of small-diameter inlet pipe, described big straight
Setting bending turnover runner 13 inside diameter reducing valve body；Multiple interlaced baffles are arranged in the major diameter reducing valve body inner wall
12, baffle has a fixing end and a free end, and in two adjacent baffles, the fixing end of one of baffle is fixed
In the left inside wall of major diameter reducing valve body, there are runner gaps between free end and the right inner wall of major diameter reducing valve body, and another
The fixing end of baffle is fixed on the right inner wall of major diameter reducing valve body, and there are streams between free end and the left inside wall of major diameter reducing valve body
Road gap, the mutual space of all baffles form bending turnover runner, and the baffle free end setting tiltedly upwarps end plate 14.
Decompression cool principle: 1. bending turnover runner extends runner, reduces pressure, while tiltedly upwarping end plate and raise fluid and falling again,
More extend process of the fluid on runner.2. baffle and the oblique end plate that upwarps increase fluid along journey flow resistance.3. fluid
Enter major diameter reducing valve body from small-diameter inlet, plays dilatation antihypertensive effect.
As shown in Fig. 1, there is mandril in one end of screw rod 4 in the example, and the other end of screw rod 4 has manual rocking handle 6, shakes manually
The safety of operating process can be improved in sampling for handle 6, and sealing can be achieved in screw rod 4 and the cooperation of nut 5, and screw rod 4, nut 5 are equal
Be built in outer tube 3,3 body design of outer tube has a fluid flow outlet, sampling bottle 9 have can airtightness, such combination finally reaches
To the whole closed purpose sampled safely.
When being sampled from well mouth of oil well, switch, the sampling switch 8 of sampling bottle 9 itself are successively opened first, is rotated further by hand
Shake handle 6；Advanced using the rotation lead-screw 4 of manual rocking handle 6, the mandril of screw front end opens the valve ball of ball-and-seat 2, makes list
It is in the open state to flow valve 2；Fluid enters outer tube 3 by ball-and-seat 2 from wellhead ground process pipeline 1 at this time, is flowed by outer tube 3
Enter decompressor 7, sampling bottle 9 is entered after decompressor 7, is i.e. sample is arrived in admission.When sampling is completed, first rotation manual rocking handle
6, the mobile retraction of the mandril of 4 front end of screw rod is completely closed to ball-and-seat 2, then successively closes sampling switch 8, sampling bottle 9 itself
Switch, completes entire sampling operation.If necessary to multiple samples, it is sampled using same process.This method is using extension
Fluid flowing stroke can reduce the principle of Fluid pressure and temperature, design decompressor, pass fluid through decompression and cooling is laggard
Enter sampling bottle, increases the safety of sampling operation process；The valve ball that ball-and-seat is closed using manipulation screw top open and close realizes single stream
Valve is opened and closure, makes operator far from hot environment, and sampling is safer, the sealable double-layer thermos flask of design is facilitated to be used as takes
Sample container realizes the whole closed admission of sample, it is ensured that the accuracy of sample；The sampling bottle double-layer heat insulation of design is handled, outer layer temperature
Spend low, liner is replaceable, both reduces input cost, while facilitating storage and transport.
Shown in Fig. 2, when it is implemented, one end of ball-and-seat 2 is connected on ground flow pipeline 1, the other end of ball-and-seat 2
It is connect with outer tube 3；Interface on 3 ontology of outer tube is connect with decompressor 7；Screw rod 4 and nut 5 are built in outer tube 3, screw rod 4
There is mandril in one end, and the one end of screw rod 4 without mandril is connect with manual rocking handle 6；Decompressor 7 is connect with sampling switch 8；Sampling switch
8 connect with sampling bottle 9.Decompressor 7 uses well-known technique liquid decompressor.
The well mouth of oil well that the present invention is applied to low-temperature produced fluid samples, and can also be applied to high temperature produced fluid well mouth of oil well
Sampling, the accuracy of samples taken can not only be improved, moreover it is possible to improve well mouth of oil well sampling security reliability.
The foregoing is merely presently preferred embodiments of the present invention, non-to limit the scope of the patents of the invention, other are with this
The equivalence changes of patent of invention spirit should all belong to the scope of the patents of the invention.
Claims (8)
1. a kind of well mouth of oil well sampler, including decompressor, sampling bottle, the decompressor outlet connects with sampling bottle import
It connects, which is characterized in that further include ball-and-seat, ball-and-seat opening and closing device, the ball-and-seat opening and closing device includes outer tube, screw rod, spiral shell
Cap, mandril, the screw rod are located at outer tube, and mandril is arranged in screw front end, and mandril connects the valve ball of ball-and-seat, ball-and-seat connection
Wellhead ground process pipeline, screw rod and nut are cooperatively connected, and nut is blocked in outer tube back-end, and outer tube front end connects the valve of ball-and-seat
Body opens up fluid flow outlet on the outer tube tube body；The decompressor includes small-diameter inlet pipe, major diameter reducing valve body,
Small-diameter inlet pipe upper end connects the fluid flow outlet of outer tube, and lower end connects the major diameter reducing valve body upper end center
Hole, the internal diameter of the major diameter reducing valve body are greater than the internal diameter of small-diameter inlet pipe, setting inside the major diameter reducing valve body
Bending turnover runner.
2. a kind of well mouth of oil well sampler according to claim 1, which is characterized in that the wellhead ground process pipe
Line, ball-and-seat, outer tube, decompressor, sampling bottle are sequentially communicated.
3. a kind of well mouth of oil well sampler according to claim 2, which is characterized in that the decompressor and sampling bottle
Between sampling switch is set.
4. a kind of well mouth of oil well sampler according to claim 1 or 2 or 3, which is characterized in that the sampling bottle is double
Layer vacuum flask.
5. a kind of well mouth of oil well sampler according to claim 1 or 2 or 3, which is characterized in that the rear end of the screw rod
Manual rocking handle is set.
6. a kind of well mouth of oil well sampler according to claim 1 or 2 or 3, which is characterized in that the major diameter decompression
Multiple interlaced baffles are arranged in valve interior wall, and baffle has a fixing end and a free end, in two adjacent gears
In plate, the fixing end of one of baffle is fixed on the left inside wall of major diameter reducing valve body, and free end and major diameter reducing valve body are right
There are runner gap between inner wall, and the fixing end of another baffle is fixed on the right inner wall of major diameter reducing valve body, free end with
There are runner gap between the left inside wall of major diameter reducing valve body, the mutual space of all baffles forms bending turnover runner,
The baffle free end setting tiltedly upwarps end plate.
7. a kind of decompressor of well mouth of oil well sampler, which is characterized in that the decompressor includes small-diameter inlet
It manages, major diameter reducing valve body, baffle, the fluid flow outlet of small-diameter inlet pipe upper end connection outer tube, described in the connection of lower end
Major diameter reducing valve body upper end center hole, the internal diameter of the major diameter reducing valve body is greater than the internal diameter of small-diameter inlet pipe, described
Setting bending turnover runner inside major diameter reducing valve body；Multiple interlaced gears are arranged in the major diameter reducing valve body inner wall
Plate, baffle have a fixing end and a free end, and in two adjacent baffles, the fixing end of one of baffle is fixed
In the left inside wall of major diameter reducing valve body, there are runner gaps between free end and the right inner wall of major diameter reducing valve body, and another
The fixing end of baffle is fixed on the right inner wall of major diameter reducing valve body, and there are streams between free end and the left inside wall of major diameter reducing valve body
Road gap, the mutual space of all baffles form bending turnover runner, and the baffle free end setting tiltedly upwarps end plate.
8. a kind of well mouth of oil well sampling method, which is characterized in that when being sampled from well mouth of oil well, successively open sampling bottle first
Switch, the sampling switch of itself, are rotated further by manual rocking handle；Advanced using the rotation lead-screw of manual rocking handle, screw front end
Mandril opens the valve ball of ball-and-seat, keeps ball-and-seat in the open state；Fluid is from wellhead ground process pipeline by single stream at this time
Valve enters outer tube, flows into decompressor by outer tube, sampling bottle is entered after decompressor, i.e. sample is arrived in admission.It has sampled
Cheng Shi, first rotation manual rocking handle, the mobile retraction of the mandril of screw front end are completely closed to ball-and-seat, then are successively closed sampling and opened
It closes, the switch of sampling bottle itself, completes entire sampling operation；If necessary to multiple samples, it is sampled using same process.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117489338A (en) * | 2024-01-02 | 2024-02-02 | 大庆汇丰达石油科技开发有限公司 | Wellhead sampling emptying stop device and application method thereof |
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| CN104790946A (en) * | 2015-03-12 | 2015-07-22 | 中国石油天然气股份有限公司 | Oil well mouth sampling device |
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| CN207245707U (en) * | 2017-08-31 | 2018-04-17 | 中国石油化工股份有限公司 | A kind of well mouth of oil well sampler and decompressor |
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| CN117489338A (en) * | 2024-01-02 | 2024-02-02 | 大庆汇丰达石油科技开发有限公司 | Wellhead sampling emptying stop device and application method thereof |
| CN117489338B (en) * | 2024-01-02 | 2024-03-26 | 大庆汇丰达石油科技开发有限公司 | Wellhead sampling emptying stop device and application method thereof |
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