CN204212767U - Oil-water well cover external pressure on-line continuous monitoring sampling protective device - Google Patents
Oil-water well cover external pressure on-line continuous monitoring sampling protective device Download PDFInfo
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- CN204212767U CN204212767U CN201420656324.6U CN201420656324U CN204212767U CN 204212767 U CN204212767 U CN 204212767U CN 201420656324 U CN201420656324 U CN 201420656324U CN 204212767 U CN204212767 U CN 204212767U
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Abstract
The utility model relates to a kind of oil-water well cover external pressure on-line continuous monitoring sampling protective device.Mainly solve existing sleeve pipe be squeezed or bad break and occur damage problem.It is characterized in that: described pressure measurement probe tube (4) top connects ground installation (18), bottom connects pressure-testing sampler (8); Described ground installation (18) is placed in oil-water well well head (27) place, comprise threeway I(17), threeway I(17) bottom is connected with shut-in valve (30), shut-in valve (30) bottom is connected with pressure measurement probe tube (4), threeway I(17) top is connected with fluid injection exhaust draining valve (16), threeway I(17) side face port is connected with pressure measxurement recorder (14) and sample cock (13).This device can the pressure change of Real-Time Monitoring jacket exterior and water-quality constituents change, to take corresponding measure before extruding or bad break appear in sleeve pipe, thus avoids or reduces casing damage.
Description
Technical field
The utility model relates to oilfield, a kind ofly specifically carries out on-line real time monitoring, real time sample and protect Casing Failure not to be extruded or the oil-water well cover external pressure on-line continuous monitoring sampling protective device of bad break for Casing Failure external pressure.
Background technology
In recent years, owing to strengthening oil field injection and extraction intensity, cause old filed to occur casing damage district in blocks, some block casing damage well number accounts for about 50% of total well number, and casing damage scope is in increasing trend year by year.At present, the sleeve pipe direction of extrusion is without unified rule, and the whole height of typical floor (tender two sections) is about about 10 meters, and in this region, single-point, multiple spot, multi-direction extruding or bad break appear in sleeve pipe, mostly are serpentine.In addition, close on the suffered direction of extrusion between well uncertain, in same block, there is good well and bad well replaces bad break phenomenon, without unified rule, therefore known, sleeve pipe occurs that the source of damage is determined jointly by block factor and individual well factor, comprises geology ecosystem situation, drilling well and injection-production method and development scheme, note adopts composition and cementing quality, production maintenance measure etc.Through investigation statistics, in the casing damage well occurred, about 60% casing deformation or the bad break position typical floor (tender two sections) in oil field, all there is typical floor (tender two sections) in most of oil field, be about between 600 ~ 1000 meters apart from the earth's surface degree of depth, and this typical floor is mainly fine and close dunn bass, there is bedding phenomenon, fine and close dunn bass does not generally seep water, but after long-term high pressure water injection, multilayer dunn bass interlayer can be made to occur cleavage phenomenon, produce slippage, the sleeve pipe at extruding or this typical floor place of bad break, cause casing damage, casing repairing cost very high (general 60 ~ 1,000,000/well) simultaneously, cause very large waste.
Summary of the invention
In order to overcome existing sleeve pipe be squeezed or bad break and occur damage deficiency; the utility model provides a kind of oil-water well to overlap external pressure on-line continuous monitoring sampling protective device; this oil-water well cover external pressure on-line continuous monitoring sampling protective device can the pressure change of Real-Time Monitoring jacket exterior and water-quality constituents change; to take corresponding measure before extruding or bad break appear in sleeve pipe; sleeve pipe is played a protective role, thus avoids or reduce casing damage.
The technical solution of the utility model is: a kind of oil-water well cover external pressure on-line continuous monitoring sampling protective device, comprise the pressure measurement probe tube be placed between bore hole and production casing, described pressure measurement probe tube top connects ground installation, and pressure measurement probe tube bottom connects pressure-testing sampler;
Described ground installation is placed in oil-water well well head place, comprise threeway I, shut-in valve, pressure measxurement recorder, described threeway I bottom is connected with shut-in valve, shut-in valve bottom is connected with pressure measurement probe tube by transition short circuit, and transition short circuit outside is provided with pressure measurement probe tube sheath, described threeway I top is connected with fluid injection exhaust draining valve, and threeway I side face port is connected with pressure measxurement recorder and sample cock.
Described pressure-testing sampler comprises one-level screen casing, secondary screen casing, three grades of screen casings, is connected, and screen casing at different levels all has mesh bottom screen casing at different levels by stationary links.
Described fluid injection exhaust draining valve top is provided with fluid injection exhaust leakage fluid dram, described threeway I side face port connects blocked valve and releasing pressure automatically safety valve successively, releasing pressure automatically safety valve is connected with threeway II, threeway II is connected to sample cock and pressure measxurement recorder.
The utility model has following beneficial effect: owing to taking such scheme, pressure-testing sampler is placed in the monitoring location of typical floor, pressure measurement probe tube is utilized to be connected with oil-water well wellhead ground device pressure measxurement recorder, get final product the water string pressure change of Real-Time Monitoring pre-position, and the change of track record pressure.After pressure increases, by the releasing pressure automatically safety valve on ground by earth pressure release, avoid the formation of water under high pressure string, reduce or eliminate shale dislocation mobile time to the extruding of sleeve pipe and bad break, thus monitoring for protection position sleeve pipe is not damaged.Meanwhile, water quality sample can be received at sample tap, be convenient to analyze water-quality constituents, understanding the water-quality constituents change of monitoring location place is, before extruding or bad break appear in sleeve pipe, grasps water under high pressure string stressor layer problem in real time, and take corresponding measure, avoid or reduce the probability of casing failure.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
1-conduit in figure, 2-surface pipe, 3-bore hole, 4-pressure measurement probe tube, 5-box cupling I, 6-one-level screen casing, 7-secondary screen casing, 8-pressure-testing sampler, 9-tri-grades of screen casings, 10-mesh, 11-stationary links, 12-sample tap, 13-sample cock, 14-pressure measxurement recorder, 15-fluid injection exhaust leakage fluid dram, 16-fluid injection exhaust draining valve, 17-threeway I, 18-ground installation, 19-box cupling II, 20-transition short circuit, 21-box cupling III, 22-pressure measurement probe tube sheath, 23-production casing, 24-oil pipe, 25-cement sheath, 26-threeway II, 27-oil-water well well head, 28-releasing pressure automatically safety valve, 29-blocked valve, 30-shut-in valve, 31-underground device, A-typical floor.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, a kind of oil-water well cover external pressure on-line continuous monitoring sampling protective device, is made up of ground installation 18 and underground device 31, is connected therebetween by pressure measurement probe tube 4.In drilling process, after taking out drilling tool, pressure measurement probe tube 4 and production casing 23 are with at present will, and the two fixes by jig, pressure measurement probe tube 4 and underground device 31 is made to be placed between bore hole 3 and production casing 23, bore hole 3 outside is provided with surface pipe 2 and conduit 1, and production casing 23 inside is oil pipe 24.Pressure measurement probe tube 4 top connects ground installation 18, and pressure measurement probe tube 4 bottom connects underground device 31 by box cupling I5.Described underground device 31 comprises pressure-testing sampler 8, and pressure-testing sampler 8 lowered position is tender two sections of typical floor A() place, be positioned at cement sheath 25 top, this position is that production casing 23 is easily extruded or bad break position, is monitoring point herein.Pressure-testing sampler 8 comprises one-level screen casing 6, secondary screen casing 7, three grades of screen casings 9, and screen casing at different levels all has mesh 10, and screen casing lower end at different levels is connected to form entirety by stationary links 11, makes screen casing at different levels fixed.
Described ground installation 18 is placed in oil-water well well head 27 place; comprise threeway I17, shut-in valve 30, pressure measxurement recorder 14; pressure measurement probe tube 4 top connects transition short circuit 20 by box cupling III 21; and transition short circuit 20 outside is provided with pressure measurement probe tube sheath 22; pressure measurement probe tube sheath 22 can protect the screw thread of sampling pressure-measuring pipe 4 upper end not damaged, and is easy to change.What pressure measurement probe tube sheath 22 was fixed on 0.2-0.5 rice, oil-water well well head 27 lower end returns in high cement, pressure measurement probe tube 4 lifting is suspended between production casing 23 and bore hole 3, and makes it fixed, in operation process, loosening phenomenon does not occur.Filter short circuit 20 upper end and connect shut-in valve 30 by box cupling II 19, when each device in shut-in valve top or tie point break down, can be closed, be convenient to maintenance or change each parts in shut-in valve 30 top.Shut-in valve 30 top connecting tee I17, threeway I17 upper end is connected with fluid injection exhaust draining valve 16, and fluid injection exhaust draining valve 16 is provided with fluid injection exhaust leakage fluid dram 15.Threeway I17 side face port is connected with blocked valve 29, releasing pressure automatically safety valve 28 in turn, releasing pressure automatically safety valve 28 is connected with threeway II 26, threeway II 26 is connected to sample cock 13 and pressure measxurement recorder 14, sample cock 13 place is provided with sample tap 12.
Under fluid injection exhaust draining valve 16 closedown and blocked valve 29 open mode, as water under high pressure string appears in monitoring point place, releasing pressure automatically safety valve 28 is opened automatically, monitoring point place water quality can be discharged, to make monitoring point place pressure be in equilibrium state, anti-sealing string hypertonia, causes production casing 23 to be extruded or bad break, underground water can be taken out by sample tap 12 simultaneously, be convenient to assay.Wherein when oil-water well normally works, the pressure change at monitoring point place, pressure measxurement recorder 14 Real-Time Monitoring underground, and automatically record pressure delta data.
Therefore, this device can realize following functions:
1. jacket exterior pressure is directly monitored.Utilize the conduction principle between water and pressure, pressure-testing sampler 8 is placed in the monitoring location place of typical floor A, utilize pressure measurement probe tube 4 to be connected with the pressure measxurement recorder 14 on ground installation 18, get final product the water string pressure change of the monitored position of Real-Time Monitoring, and the change of track record pressure.
2. monitoring location water quality sample is directly taken out.When Casing Failure external monitoring position water body pressure increases, pressure-testing sampler 8, pressure measurement probe tube 4 is utilized to be communicated with oil-water well wellhead ground device sample tap 12, after pressure increases, water body can be made to be flowed out by pressure measurement probe tube 4, water quality sample is received at sample tap 12 place, be convenient to analyze water-quality constituents, understand the water-quality constituents change of monitoring location place.
3. directly monitoring location place water under high pressure string pressure is unloaded.When production casing 23 external monitoring position water body pressure increases; the releasing pressure automatically safety valve 28 be provided with by ground installation 18; by earth pressure release; avoid the formation of water under high pressure string, reduce or eliminate shale dislocation mobile time to the extruding of sleeve pipe and bad break thus monitoring for protection position sleeve pipe is not damaged.
5. online real-time operation.This oil-water well cover external pressure on-line continuous monitoring sampling protective device; can the pressure change of monitoring sleeve external monitoring position accurately directly perceived in real time; and the water-quality constituents change of monitoring location place can be taken out; simultaneously before extruding or bad break appear in sleeve pipe; real-time grasp water under high pressure string stressor layer problem; and take corresponding measure, sleeve pipe is played a protective role, avoids or reduce the probability of casing failure.
Claims (3)
1. an oil-water well cover external pressure on-line continuous monitoring sampling protective device, comprise the pressure measurement probe tube (4) be placed between bore hole (3) and production casing (23), it is characterized in that: described pressure measurement probe tube (4) top connects ground installation (18), pressure measurement probe tube (4) bottom connects pressure-testing sampler (8);
Described ground installation (18) is placed in oil-water well well head (27) place, comprise threeway I(17), shut-in valve (30), pressure measxurement recorder (14), described threeway I(17) bottom is connected with shut-in valve (30), shut-in valve (30) bottom is connected with pressure measurement probe tube (4) by transition short circuit (20), and transition short circuit (20) outside is provided with pressure measurement probe tube sheath (22), described threeway I(17) top be connected with fluid injection exhaust draining valve (16), threeway I(17) side face port is connected with pressure measxurement recorder (14) and sample cock (13).
2. oil-water well cover external pressure on-line continuous monitoring sampling protective device according to claim 1; it is characterized in that: described pressure-testing sampler (8) comprises one-level screen casing (6), secondary screen casing (7), three grades of screen casings (9); connected by stationary links (11) bottom screen casing at different levels, and screen casing at different levels all has mesh (10).
3. oil-water well cover external pressure on-line continuous monitoring sampling protective device according to claim 1; it is characterized in that: described fluid injection exhaust draining valve (16) top is provided with fluid injection exhaust leakage fluid dram (15); described threeway I(17) side face port connects blocked valve (29) and releasing pressure automatically safety valve (28) successively; releasing pressure automatically safety valve (28) is connected with threeway II (26), threeway II (26) is connected to sample cock (13) and pressure measxurement recorder (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420656324.6U CN204212767U (en) | 2014-11-05 | 2014-11-05 | Oil-water well cover external pressure on-line continuous monitoring sampling protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420656324.6U CN204212767U (en) | 2014-11-05 | 2014-11-05 | Oil-water well cover external pressure on-line continuous monitoring sampling protective device |
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|---|---|
| CN204212767U true CN204212767U (en) | 2015-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420656324.6U Withdrawn - After Issue CN204212767U (en) | 2014-11-05 | 2014-11-05 | Oil-water well cover external pressure on-line continuous monitoring sampling protective device |
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| CN (1) | CN204212767U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373116A (en) * | 2014-11-05 | 2015-02-25 | 大庆学府石油科技有限公司 | Online continuous monitoring sampling protecting device for external oil-water well casing pressure |
| CN109946118A (en) * | 2019-03-22 | 2019-06-28 | 夸克能源工程实验室(深圳)有限公司 | A kind of Portable oil-gas water-sampling device |
-
2014
- 2014-11-05 CN CN201420656324.6U patent/CN204212767U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373116A (en) * | 2014-11-05 | 2015-02-25 | 大庆学府石油科技有限公司 | Online continuous monitoring sampling protecting device for external oil-water well casing pressure |
| CN109946118A (en) * | 2019-03-22 | 2019-06-28 | 夸克能源工程实验室(深圳)有限公司 | A kind of Portable oil-gas water-sampling device |
| CN109946118B (en) * | 2019-03-22 | 2023-11-10 | 夸克能源工程实验室(深圳)有限公司 | Portable oil-gas-water sampling device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Fujun Inventor after: Li Xiaochuan Inventor after: Song Jingwei Inventor before: Li Fujun Inventor before: Li Xiaochuan Inventor before: Song Jingwei |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150318 Effective date of abandoning: 20170517 |