CN101929315A - Well cleanup detecting device used for oil wells - Google Patents
Well cleanup detecting device used for oil wells Download PDFInfo
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- CN101929315A CN101929315A CN2009102117841A CN200910211784A CN101929315A CN 101929315 A CN101929315 A CN 101929315A CN 2009102117841 A CN2009102117841 A CN 2009102117841A CN 200910211784 A CN200910211784 A CN 200910211784A CN 101929315 A CN101929315 A CN 101929315A
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Abstract
The invention discloses a well cleanup detecting device used for oil wells, which comprises a flow metering system connected to a wellhead of the oil well, an inlet temperature sensor connected to the flow metering system, and an outlet temperature sensor arranged on an oil well output pipeline. When injected water flows through the flow metering system, the inlet temperature sensor detects the inlet water temperature of the injected water, a flow detector of the flow metering system detects the flow of the injected water, and the outlet temperature sensor detects the water temperature of water output after oil well cleanup. In the well cleanup process, numerical values recorded in a ground recorder are observed, so that machines used for the well cleanup can be controlled, and a reliable technical basis is provided for well cleanup construction. And each group of numerical values recorded in the ground recorder can be taken as the fundamental data for the next well cleanup of the same oil well so as to facilitate the next well cleanup.
Description
Technical field
The present invention relates to the well-flushing field of measuring technique of oilfield, relate to a kind of well-flushing checkout gear that is used for oil well in particular.
Background technology
Nowadays, the oil or the use of its accessory are seen everywhere in our daily life at ordinary times, and the exploitation of oil is improvement day by day also.Because the residing geographical environment difference in oil field, be subjected to the influence of formation temperature, in the process of oil exploitation, the paraffin material that crude oil contains can come out in condensation, and at the lower stratigraphic interval of well temperature, paraffin can be attached on down-hole oil production tubing string inwall and the sucker rod, and is mingled in impurity such as grit wherein, when cohesion is serious, can directly influence oil pumper load and production fluid amount.
In order to address this problem, the measure of employing is regular injection hot water circuit well-flushing in down-hole string, and relies on the heat that injects water that the coagulation of paraffin is melted, thereby solves the problem of line clogging all the time.But, in the prior art, because long-term process shortage otherwise effective technique detection technique to technology for washing well, when well-flushing is constructed, just rely on artificial experience roughly to estimate the injection discharge capacity of hot water, the temperature of current then is to judge by artificial touch pipeline.The restriction that is subjected to manually accumulating experience, phenomenons such as water temperature is on the low side, flow is too small, circulation timei is too short can appear injecting in the process of water filling in down-hole string, make the effect of well-flushing not reach the effect of requirement, and water filling blindly can cause unnecessary waste.
So, press for a kind of well-flushing checkout gear now, in the process of well-flushing, the hot water that injects oil well is monitored, thus the restriction of disengaging artificial experience.
Summary of the invention
In view of this, the invention provides a kind of well-flushing checkout gear that is used for oil well, this device provides a kind of detection technique to injecting discharge, injection in the washing well process and flowing out water temperature, has solved the problem of the artificial experience restriction well washing effect that always exists in the prior art.
For achieving the above object, the invention provides following technical scheme:
A kind of well-flushing checkout gear that is used for oil well comprises: be connected the flowmeter system of well mouth of oil well, be connected the inlet temperature sensor on the described flowmeter system and be arranged on outlet temperature sensor on the oil well output pipe;
Flow through in the described flowmeter system when injecting water, described inlet temperature sensor carries out the inlet water temperature detection to injecting water, the flow detector of described flowmeter system carries out flow detection to injecting water, and described outlet temperature sensor detects the water temperature of carrying out the back water of exporting of oil well cleaning.
Preferably, described flowmeter system comprises:
The high pressure line joint with the main casing that described high pressure line tip side is connected, is installed in the preceding guide and the back guide of described main casing latus rectum inside, is connected the impeller shaft between described preceding guide and the back guide, is connected the impeller on the described impeller shaft;
Described flow detector is threaded in the main casing outside and the corresponding position of described impeller, carries out discharge when flowing through water in described main casing latus rectum to detect.
Preferably, described flow detector is the magnetoelectric induction flow detector.
Preferably, described preceding guide and back guide are welded by two blocks of steel plates that are mutually 90 degree respectively.
Preferably, weld solid conical respectively on guide and the end that afterwards guide is relative before described, on two described solid conicals respectively setting-in can be installed in the ball bearing of described impeller shaft.
Preferably, described temperature pick up passes described main casing latus rectum one rear flank and is welded on the described main casing.
Preferably, the end portion of described high pressure line joint is the external screw thread shape.
Preferably, also comprise the surface recorder that is connected with flow detector, inlet temperature sensor and the outlet temperature sensor of described flowmeter system respectively.
Preferably, the temperature element of the inner encapsulation of described temperature pick up is a RTD.
Preferably, described surface recorder comprises the single-chip microcomputer electronic circuit that is used to handle various detection limits, and the display floater that is used to show the detection limit after the processing.
Via above-mentioned technical scheme as can be known, compared with prior art, the present invention openly provides a kind of well-flushing checkout gear that is used for oil well, in washing well process, flowmeter system, inlet temperature sensor and outlet temperature sensor respectively to the flow that injects water and inject, the water temperature when flowing out measures, and will the information of measuring be transferred in the single-chip microcomputer electronic circuit in the surface recorder and handle, display floater shows treated metrical information.In washing well process, by observing the numerical value that writes down in the surface recorder, not only can control being used for the machine that well-flushing uses, also provide the reliable technique foundation for the well-flushing construction.And can respectively organize the basic data of numerical value with what write down in the surface recorder, and then provide convenience for well-flushing next time as same oil well well-flushing next time.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments of the invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.
Fig. 1 is a kind of structural representation that is used for the well-flushing checkout gear of oil well of the present invention;
Fig. 2 is the structural representation of flowmeter system among the present invention;
Fig. 3 is the structural representation of surface recorder among the present invention;
Fig. 4 is the on-the-spot characterization processes flow chart 1 of the present invention;
Fig. 5 is the on-the-spot characterization processes flow chart 2 of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
See also accompanying drawing 1 and accompanying drawing 5, wherein accompanying drawing 1 comprises for the embodiment of the invention discloses a kind of structural representation that is used for the well-flushing checkout gear of oil well: surface recorder A, inlet temperature sensor B1, outlet temperature sensor B2 and flowmeter system C.Main part of the present invention is serially connected between ground water filling pump truck (among the figure indicate) and the oil pumper pipeline (among the figure sign), and wherein main part comprises: two temperature pick up B and flowmeter system C.
Inlet temperature sensor B1 is connected on the flowmeter system, flowmeter system C is connected with the water filling pump truck pipeline 21 at well mouth of oil well place, in the process of well-flushing, the hot water that is used for well-flushing is input to flowmeter system C by the pipeline of water filling pump truck, this moment, flowmeter system C detected the hot water instantaneous delivery and the accumulation flow of flowing through respectively, and the inlet temperature sensor B1 that is connected on the flowmeter system C then detects the hot water temperature's that flows through inlet water temperature.Then, the hot water of flowmeter system C of flowing through enters among the oil pipe E in the oil well, and the paraffin mass that condenses upon on the oil pipe E inwall is dissolved, hot water behind the dissolving paraffin is again by oil pipe output pipe D output, the end of outlet temperature sensor B2 is inserted in the thermometer hole at oil well output pipe D place, and the outlet temperature of dissolving the hot water of exporting behind the paraffin is detected.
Simultaneously, inlet temperature sensor B1, outlet temperature sensor B2 are connected in surface recorder A by cable F respectively with flowmeter system C, and inlet temperature sensor B1, outlet temperature sensor B2 and flowmeter system C are sent to inlet temperature, outlet temperature, instantaneous delivery and the accumulation flow of detected hot water among the surface recorder A respectively.In washing well process, by observing the numerical value that writes down among the surface recorder A, control being used for the machine that well-flushing uses, and can respectively organize the basic data of numerical value, and then provide convenience for well-flushing next time what write down among the surface recorder A as same oil well well-flushing next time.
See also accompanying drawing 1, accompanying drawing 2 and accompanying drawing 5, in order in the washing well process of oil well, to obtain measuring more accurately numerical value, on the basis of the disclosed embodiment of the invention described above, the flowmeter system C that is used to inject the flow measurement of water comprises: high pressure line joint 1, main casing 3, preceding guide 4, ball bearing 5, flow detector 6, impeller 7, impeller shaft 8, back guide 9 and solid conical 10.
The end portion of high pressure line joint 1 is connected with water filling pump truck pipeline 21, and for the female adapter with water filling pump truck pipeline 21 matches, the end portion of joint high pressure line joint 1 is an external thread structure.Adopt the taper pipe thread mode to be connected between the bottom part of high pressure line joint 1 and the main casing 3, this kind connected mode has self-packing effect after screwing.
Setting-in can be installed in the ball bearing 5 of impeller shaft 8 respectively on two solid conicals 10.Impeller 7 is installed on the impeller shaft 8, in the ball bearing 5 before an end of impeller shaft 8 inserts on the guide 4, in the ball bearing 5 after the other end inserts on the guide 9.The frame for movement of back guide 9 does not produce the backflow whirlpool after making fluid flow through impeller 7.
It should be noted that, the end portion of preceding guide 4 and back guide 9 has all designed positioning convex kayser part, make it to match with the hole enlargement groove part of main casing 3 endoporus, in order to guarantee leaving rational gap in the axial direction between impeller 7 and preceding guide 4 and the back guide 9, make impeller 7 between preceding guide 4 and back guide 9, to rotate freely, meeting steadily promoted impeller 7 rotations after fluid flow through preceding guide 4 like this, and then guide 9 steadily flows out after the warp.
On the position of the corresponding impeller 7 in main casing 3 outsides, mode by screw thread radially is fastened with flow detector 6, the inside of this flow detector 6 is encapsulating magnet steel (not indicating among the figure) and coil (not indicating among the figure), also can be described as magnetoelectric induction flow detector 6.
When impeller 7 rotations, can produce induced electromotive force in coil.This flow detector 6 can be exported several electric pulses that are directly proportional with impeller 7 speeds of rotation, because the speed of rotation of impeller 7 is to be directly proportional with the flow size, so be that this relation that is directly proportional with the flow size can realize injecting the detection of discharge by the speed of rotation of impeller 7.
Simultaneously, the face down bonding that inlet temperature sensor B1 passes main casing 3 latus rectums is connected on the main casing 3, and the welding position of inlet temperature sensor B1 optimum is, on main casing one side with respect to connection traffic detector 6.The inside of inlet temperature sensor B1 is encapsulating RTD (not indicating among the figure), because the resistance change of RTD is directly proportional with the variations in temperature of injecting water, when injecting current through the latus rectum of main casing 3, the inlet temperature when inlet temperature inductor B1 can detect water outlet and injects according to this relation.And be equipped with line socket 11 on flow detector 6 and the inlet temperature sensor B1 herein.The end of cable F is connected on the line socket 11, and the other end then is connected on the surface recorder A.
The end of outlet temperature sensor B2 is inserted in the thermometer hole at oil well output pipe D place, and the outlet temperature of current of output is detected, and the other end then is connected with cable F.Inlet temperature sensor B1, outlet temperature sensor B2 and flowmeter system C are sent to inlet temperature, outlet temperature, instantaneous delivery and the accumulation flow of detected hot water among the surface recorder A by cable F respectively, finish the detection to the injection water of washing well process.
It should be noted that the end design that the oil pipe E in main casing 3 and the oil well is connected has tapering oil pipe pin thread screw thread, can make things convenient for main casing 3 to dock mutually, can realize self sealss with oil pipe box screw thread on the oil pipe E.
In addition, on the basis of the disclosed embodiment of the invention described above,, can not produce leakage with after guaranteeing high pressure line joint 1 and water filling pump truck pipeline 21 docking at the interface setting-in seal rubber sleeve 2 of high pressure line joint 1 with water filling pump truck pipeline 21.But embodiments of the invention are not limited thereto.
See also accompanying drawing 2 and accompanying drawing 3, on the basis of the disclosed embodiment of the invention described above, the surface recorder A that is used to write down is designed to portable cabinet, comprising: single-chip microcomputer electronic circuit 12, display floater 13 and power supply 14.It is online to adopt cable F to peg graft between this surface recorder A and inlet temperature sensor B1, outlet temperature sensor B2 and the amount meter systems C, instantaneous delivery, accumulation flow, inlet temperature and the outlet temperature of the injection water that flow detector 6 and inlet temperature sensor B1, outlet temperature sensor B2 are measured are transported to surface recorder A by cable F, and these detected values carry out after data handle via single-chip microcomputer electronic circuit 12.The demonstration signal of output temperature and flow shows on display floater 13.Simultaneously, the data that detect are backuped in the memory (indicating among the figure), form the electronic document of overall process,, and then provide convenience for well-flushing next time as the basic data of same oil well well-flushing next time.
It should be noted that the power supply 14 that is used among the present invention surface recorder A is battery, but embodiments of the invention are not limited thereto.
In addition, on the basis of the disclosed embodiment of the invention described above, display floater 13 can adopt the display floater of liquid crystal display film key, but embodiments of the invention are not limited thereto.
See also accompanying drawing 4 and accompanying drawing 5, be used for the well-flushing checkout gear on-the-spot test process chart of oil well for the present invention is a kind of.
Before carrying out well-flushing, the box screw thread of the pin thread end of thread on oil pipe E of the main casing on the flowmeter system C 3 is screwed in, again the high pressure line joint 1 of ground high pressure pump truck pipeline 21 with main casing 3 front ends is screwed in, then, thermometer hole interpolation inlet/outlet temperature pick up B2 at well head oil pipe output pipe D, and outlet temperature sensor B2 is connected on the surface recorder A by supporting cable F, simultaneously, use supporting cable F, flow detector 6 is connected on the surface recorder A with the inlet temperature sensor B1 that is welded on the flowmeter system C, opens the power supply 14 of surface recorder A at last.
In washing well process, start after the pump truck, concrete steps are:
Step s1: in well, inject hot water.
Step s2: inject the inlet temperature sensor of current on flowmeter system, detect the temperature that obtains injecting water, i.e. inlet temperature.And this detected value is transported in the surface recorder.
Step s3: flow detector is passed through in water current driven impeller rotation back, and detects instantaneous delivery and the accumulation flow that injects water.Simultaneously detected value is transported in the surface recorder.
Step s4: the flow value that observation shows on the surface recorder, if flow value diminishes, execution in step s7 then.
Step s5: when injecting water from the oil pipe output pipe output of well head, the outlet temperature sensor that is arranged in herein is transported to surface recorder with the outlet water temperature of detected injection water.
Step s6: the outlet water temperature that shows on the observation surface recorder when the outlet water temperature greater than 65 degrees centigrade is, stops the well-flushing construction; If no, then turn back to step s1.。
Step s7: improve the pressure of ground pump truck water filling, turn back to step s5 afterwards.
With reference to the accompanying drawings shown in 5 in conjunction with above-mentioned steps, the process of whole well-flushing is: inject hot water after starting pump truck in well, the water of injection is at first flowed through and is welded on inlet temperature sensor B1 on the flowmeter system C, records inlet temperature.Then, 7 rotations of water current driven impeller record instantaneous delivery and accumulation flow by flow detector 6.Then, current come downwards to the shaft bottom along the annular space of sleeve pipe 22 and oil pipe E, by feed liquor screen casing 23, pass oil well pump 24 and enter oil pipe E inside then, go upward to well head again.The hot water that injects during this can melt away the paraffin mass that condenses upon oil pipe E inwall, and when current were flowed through ground oil pipe output pipe D, B2 recorded outlet temperature by outlet temperature sensor.
At last, the inlet temperature, outlet temperature, instantaneous delivery and the accumulation flow that record are transported among the surface recorder A by cable F, in washing well process, by observing the numerical value that writes down among the surface recorder A, control being used for the machine that well-flushing uses, and can respectively organize the basic data of numerical value, and then provide convenience for well-flushing next time with what write down among the surface recorder A as same oil well well-flushing next time.
It should be noted that accompanying drawing 5 also comprises: inject current direction I, about box cupling 25, beam hanger 26 be connected oil pumper bar 27.
Each embodiment adopts the mode of going forward one by one to describe in this manual, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed device of embodiment, because it is corresponding with the embodiment disclosed method, so description is fairly simple, relevant part partly illustrates referring to method and gets final product.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a well-flushing checkout gear that is used for oil well is characterized in that, comprising: be connected the flowmeter system of well mouth of oil well, be connected the inlet temperature sensor on the described flowmeter system and be arranged on outlet temperature sensor on the oil well output pipe;
Flow through in the described flowmeter system when injecting water, described inlet temperature sensor carries out the inlet water temperature detection to injecting water, the flow detector of described flowmeter system carries out flow detection to injecting water, and described outlet temperature sensor detects the water temperature of carrying out the back water of exporting of oil well cleaning.
2. device according to claim 1 is characterized in that, described flowmeter system comprises:
The high pressure line joint with the main casing that described high pressure line tip side is connected, is installed in the preceding guide and the back guide of described main casing latus rectum inside, is connected the impeller shaft between described preceding guide and the back guide, is connected the impeller on the described impeller shaft;
Described flow detector is threaded in the main casing outside and the corresponding position of described impeller, carries out discharge when flowing through water in described main casing latus rectum to detect.
3. device according to claim 1 is characterized in that, described flow detector is the magnetoelectric induction flow detector.
4. device according to claim 2 is characterized in that, described preceding guide and back guide are welded by two blocks of steel plates that are mutually 90 degree respectively.
5. device according to claim 2 is characterized in that, welds solid conical respectively on guide and the end that afterwards guide is relative before described, on two described solid conicals respectively setting-in can be installed in the ball bearing of described impeller shaft.
6. device according to claim 2 is characterized in that, described temperature pick up passes described main casing latus rectum one rear flank and is welded on the described main casing.
7. device according to claim 2 is characterized in that the end portion of described high pressure line joint is the external screw thread shape.
8. device according to claim 1 is characterized in that, also comprises the surface recorder that is connected with flow detector, inlet temperature sensor and the outlet temperature sensor of described flowmeter system respectively.
9. according to claim 1 or 6 described devices, it is characterized in that the temperature element of the inner encapsulation of described temperature pick up is a RTD.
10. device according to claim 8 is characterized in that, described surface recorder comprises the single-chip microcomputer electronic circuit that is used to handle various detection limits, and the display floater that is used to show the detection limit after the processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102117841A CN101929315A (en) | 2009-11-12 | 2009-11-12 | Well cleanup detecting device used for oil wells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102117841A CN101929315A (en) | 2009-11-12 | 2009-11-12 | Well cleanup detecting device used for oil wells |
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| Publication Number | Publication Date |
|---|---|
| CN101929315A true CN101929315A (en) | 2010-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102117841A Pending CN101929315A (en) | 2009-11-12 | 2009-11-12 | Well cleanup detecting device used for oil wells |
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| CN (1) | CN101929315A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900422A (en) * | 2012-09-28 | 2013-01-30 | 中国石油天然气股份有限公司 | Downhole flow tester and downhole flow testing method |
| CN106223877A (en) * | 2016-08-12 | 2016-12-14 | 中国石油大学(华东) | The automatic well washing apparatus of coal bed gas well |
-
2009
- 2009-11-12 CN CN2009102117841A patent/CN101929315A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900422A (en) * | 2012-09-28 | 2013-01-30 | 中国石油天然气股份有限公司 | Downhole flow tester and downhole flow testing method |
| CN102900422B (en) * | 2012-09-28 | 2015-07-08 | 中国石油天然气股份有限公司 | Downhole flow tester and downhole flow testing method |
| CN106223877A (en) * | 2016-08-12 | 2016-12-14 | 中国石油大学(华东) | The automatic well washing apparatus of coal bed gas well |
| CN106223877B (en) * | 2016-08-12 | 2018-08-21 | 中国石油大学(华东) | The automatic well washing apparatus of coal bed gas well |
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Application publication date: 20101229 |
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