CN109209344B - Eccentric corrosion monitoring device for water injection well - Google Patents
Eccentric corrosion monitoring device for water injection well Download PDFInfo
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- CN109209344B CN109209344B CN201811074482.XA CN201811074482A CN109209344B CN 109209344 B CN109209344 B CN 109209344B CN 201811074482 A CN201811074482 A CN 201811074482A CN 109209344 B CN109209344 B CN 109209344B
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- injection well
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000005260 corrosion Methods 0.000 title claims abstract description 32
- 230000007797 corrosion Effects 0.000 title claims abstract description 32
- 238000002347 injection Methods 0.000 title claims abstract description 31
- 239000007924 injection Substances 0.000 title claims abstract description 31
- 238000012806 monitoring device Methods 0.000 title claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 50
- 239000002184 metal Substances 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 17
- 210000000078 claw Anatomy 0.000 description 10
- 230000001960 triggered effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/001—Survey of boreholes or wells for underwater installation
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- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides an eccentric corrosion monitoring device for a water injection well, which comprises a monitor and a monitoring core, wherein the monitoring core is placed into an eccentric positioning groove of the monitor through a fisher; two sets of detachable metal links are arranged on the monitoring core at intervals, wherein one set of metal links is communicated with the outside through a first bypass hole of the monitor, and the other set of metal links is communicated with the inner cavity through a second bypass hole. The monitoring core is put into and taken out under the action of the throwing and fishing device, and can simultaneously monitor the corrosion condition of the water body outside and in the inner cavity of the device on the part to be monitored so as to fully know the corrosion resistance and the service life of the water injection tool and the pipe column, thereby improving the safety of the water injection tool and the pipe column.
Description
Technical Field
The invention belongs to the technical field of downhole tools for oil fields, and particularly relates to an eccentric corrosion monitoring device for a water injection well.
Background
Water injection well downhole corrosion has not had a good dynamic monitoring tool. For a water injection well, the main technology for testing the corrosion condition at present is to calculate the underground corrosion condition of the water injection well according to the metal weightlessness condition after placing a metal hanging piece in indoor simulated water for corrosion for a period of time, or place the metal hanging piece in a water injection system to monitor whether the water quality reaches the standard, and the like, but the two methods cannot truly reflect the influence of various comprehensive factors such as the water quality, the underground temperature, the pressure, the flow rate of multiphase fluid and the like on the corrosion of underground tools, and at present, a monitoring method capable of visually testing the underground corrosion of the water injection well does not exist.
Disclosure of Invention
In view of this, the present invention provides an eccentric corrosion monitoring device for a water injection well, which can conveniently, quickly and visually monitor the corrosion condition of the water injection well.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an eccentric corrosion monitoring device for a water injection well comprises a monitor and a monitoring core, wherein the monitoring core is placed into an eccentric positioning groove of the monitor through a fisher; two sets of detachable metal links are arranged on the monitoring core at intervals, wherein one set of metal links is communicated with the outside through a first bypass hole of the monitor, and the other set of metal links is communicated with the inner cavity through a second bypass hole.
Further, the monitoring core includes fishing rod from the front to the back in proper order, press the cap, the cam supporting seat, supporter and end are stifled, fishing rod's rear end sets up in pressing the cap, and can remove in pressing the cap, it has the screw thread to press the cap outside, the cam supporting seat inboard is connected with pressing the cap through the screw thread, set up in the cam supporting seat through the torsional spring in the cam supporting seat, the outer wall of cam supporting seat is worn out to the point portion of cam, threaded connection is passed through with the front end of supporter to the rear end of cam supporting seat, the rear end and the end of supporter block up threaded connection.
Further, the monitor comprises an upper connector, an upper connecting sleeve, a main body, a lower connecting sleeve and a lower connector which are sequentially in threaded connection, wherein the upper connecting sleeve is provided with a first cavity, an upper guide body is arranged in the first cavity, the upper end of the upper guide body abuts against the lower portion of the upper connector, the lower end of the upper guide body is fixedly connected with the upper end of the main body, an eccentric positioning groove is formed in the side wall of the lower end of the upper guide body, the lower connecting sleeve is provided with a second cavity, a lower guide body is fixedly arranged in the second cavity, two cavities which are spaced and communicated up and down are arranged in the main body and are respectively a first main cavity and a second main cavity, the first main cavity corresponds to the eccentric positioning groove in the side wall of the upper guide body up and down, the second main cavity is communicated with the first cavity and the second cavity, and a first bypass hole communicated with the outside and a second bypass hole are formed in the side wall of the first main cavity.
Further, the supporter is the cylinder, both ends all are provided with the recess around the supporter, all be provided with in the recess and fill up the hoop, gasket and metal link, fill up the hoop and open along the axial lead direction and have the opening, fill up the hoop and overlap in the recess of supporter through opening the opening, the gasket is through setting up opening detachable interval cover on the perisporium on filling up the hoop, metal link detachable sets up between adjacent pad hoop, the metal link that is located the front end recess communicates with the external world, the metal link that is located the rear end recess communicates with the inner chamber.
Furthermore, a pressure spring is arranged between the fishing rod and the pressing cap, a baffle ring is arranged at the rear end of the fishing rod, a stepped limiting hole is formed in the inner side of the pressing cap, and the pressure spring is located between the limiting hole and the baffle ring.
Further, a sealing ring is arranged between the cam supporting seat and the pressing cap.
Furthermore, the gasket hoop and the gasket are made of plastic materials. Has elasticity, is convenient to open and then is sleeved outside the cushion hoop.
Further, the lower guide body is arranged in the second cavity through the support, the upper end and the lower end of the support are clamped between the main body and the lower connector, the lower guide body is connected with the support through external threads and is further provided with a pin between the lower guide body and the support, and the pin plays a role in fixing.
Furthermore, the upper end of the lower guide body is provided with a guide surface which is an inclined surface.
Furthermore, the middle part of the supporting body and the peripheral wall of the cam supporting seat are provided with sunken grooves, and sealing rings are arranged in the sunken grooves. The liquid in the oil pipe is prevented from acting on the upper metal hanging ring from the upper section of the counter bore to influence the corrosion test of the upper metal hanging ring, and the annular liquid between the oil pipe and the sleeve is prevented from entering the lower hanging ring to influence the corrosion test of the lower hanging ring. The upper metal hanging ring is mainly contacted with the liquid in the annular space of the casing, and the lower metal hanging ring is mainly contacted with the liquid in the oil pipe.
The ware of salvaging is present commonly used fishing device, and usually from the top down includes in proper order that the ware top connection is dragged for, goes up the cam, drags for the arm, escorts head (fishing head), chamber bag, main part, cam, guide claw down, goes up the cam and is trigger point and lower trigger point respectively for down with the lower cam, escorts head and guide claw under the normal condition and can be located the main part, does not stretch out the main part promptly. When the upper cam is triggered, the pushing head (fishing head) is opened, and when the lower cam is triggered, the guide claw is opened. When the escort head (fishing head) is not opened, the escort head can be hidden in the cavity bag.
Connect on water injection well completion tubular column, when the corruption condition in the pit needs to be monitored, earlier place the pad hoop in proper order with the groove department of the supporter upper end of monitoring core, the gasket, the metal link, the pad hoop is placed in proper order to the groove department of supporter lower extreme, the gasket, the metal link, place the back that finishes, the fishing rod that will send the head and monitor the core of putting into and dragging for the anchor pin is connected, by throwing and dragging for the ware area monitoring core through first cavity, second main cavity and second cavity enter into the pit shaft. To throw and drag for the ware and upwards pull up, the lower cam and the last cam of throwing and dragging for the ware are all triggered, the direction claw opens after triggering, give the head to open as pressing, the direction claw supports the spigot surface of guide body down, make and throw and drag for the ware and remove to the position relative with first main cavity, give the head to open as pressing, give the head owing to pass through the fixed pin with fishing rod and connect, consequently, the fishing rod one end of monitoring core can be followed and send the head to the lateral shifting, two end stifled still in the pocket of throwing and dragging for the ware, and thus, when mentioning and throwing and dragging for the ware, the monitoring core just in time is followed and is thrown and drag for the ware and get into first main cavity. The cam of the monitoring core is clamped at the expanded hole in the eccentric locating groove of the monitor, the throwing and fishing device is continuously lifted, the throwing and fishing device and the monitoring core fixing pin are cut off, and the monitoring core is fixed in the eccentric locating groove.
The groove at the upper end of the support body is communicated with the first side through hole, liquid in the shaft annulus acts on the metal hanging ring through the first side through hole and the overflowing channel, the groove at the lower end of the support body is communicated with the second side through hole, and the liquid in the shaft acts on the metal hanging ring through the second side through hole and the overflowing channel.
After the monitoring core acted on a period in the pit shaft, go into down and throw and drag for the ware, trigger the cam, make the fishing head pop out, the fishing rod butt joint on fishing head and the monitoring core, it drives fishing rod rebound to lift to throw and drag for the ware, thereby drive the torsional spring and rotate, make the cam on the monitoring core release, the monitoring core is along with throwing and dragging for the ware and lift first main cavity and the eccentric positioning groove that breaks away from the monitor, thereby the monitoring core is proposed ground, take out the metal link from the monitoring core and corrode the detection, the mesh of the dynamic monitoring water injection well corruption condition has been realized.
Compared with the prior art, the eccentric corrosion monitoring device for the water injection well has the following advantages:
the eccentric corrosion monitoring device for the water injection well, provided by the invention, has the advantages that the monitoring core is put in and taken out under the action of the throwing and fishing device, and can simultaneously monitor the corrosion condition of the water body outside and in the inner cavity of the device on the part to be monitored, so that the corrosion resistance and the service life of the water injection tool and the pipe column can be fully known, and the safety of the water injection tool and the pipe column can be improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a front cross-sectional view of an eccentric corrosion monitoring device for a water injection well according to an embodiment of the present invention;
FIG. 2 is a front cross-sectional view of a monitor according to an embodiment of the present invention;
FIG. 3 is a front cross-sectional view of a monitoring core according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a gasket according to an embodiment of the invention;
FIG. 5 is a front view of a mat hoop according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of a gasket and a metal suspension ring in accordance with an embodiment of the present invention;
FIG. 7 is a front view of the bailer of an embodiment of the present invention.
Description of reference numerals:
1. a monitor; 2. a monitoring core; 101. an upper joint; 102. connecting sleeves are arranged; 103. an upper guide body; 104 an eccentric locating slot; 105. a main body; 106. a first bypass hole; 107. a second bypass hole; 108. a lower connecting sleeve; 109. a support; 110. a lower guide body; 111. a lower joint; 201. a fishing rod; 202. pressing the cap; 203. a pressure spring; 204. a cam supporting seat; 205. a torsion spring; 206. a cam; 207. a cushion hoop; 208. a gasket; 209, a metal suspension loop; 210. an overflow channel; 211. a support body; 212. a first primary cavity; 213. a second primary cavity; 215. an overflow channel; 216. bottom blocking; 301. the upper joint of the throwing and fishing device; 302. an upper cam; 303. throwing and fishing arms; 304. a escort head (salvage head); 305. a cavity pocket; 306. a main body; 307. a lower cam; 308. and a guide claw.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-7, the eccentric corrosion monitoring device for the water injection well comprises a monitor 1 and a monitoring core 2, wherein the monitoring core 2 is placed into an eccentric positioning groove 104 of the monitor 1 through a fisher; two groups of detachable metal hanging rings 209 are arranged on the monitoring core 2 at intervals, wherein one group of metal hanging rings 209 are communicated with the outside through the first bypass hole 106 of the monitor 1, and the other group of metal hanging rings 209 are communicated with the inner cavity through the second bypass hole 107.
The monitoring core sequentially comprises a fishing rod 201, a pressing cap 202, a cam supporting seat 204, a supporting body 211 and a bottom plug 216 from front to back, the rear end of the fishing rod 201 is arranged in the pressing cap 202 and can move in the pressing cap 202, threads are arranged on the outer side of the pressing cap 202, the inner side of the cam supporting seat 204 is connected with the pressing cap 202 through threads, the cam supporting seat 204 is arranged in the cam supporting seat 204 through a torsion spring 205, the tip of a cam 206 penetrates out of the outer wall of the cam supporting seat 204, the rear end of the cam supporting seat 204 is connected with the front end of the supporting body 211 through threads, and the rear end of the supporting body 211 is connected with the bottom plug 216 through threads.
The monitor comprises an upper connector 101 and an upper connecting sleeve 102 which are connected in turn by screw threads, the connecting device comprises a main body 105, a lower connecting sleeve 108 and a lower connector 111, wherein the upper connecting sleeve 102 is provided with a first cavity, an upper guide body 103 is arranged in the first cavity, the upper end of the upper guide body 103 is abutted against the lower part of the upper connector 101, the lower end of the upper guide body 103 is fixedly connected with the upper end of the main body 105, an eccentric positioning groove 104 is formed in the side wall of the lower end of the upper guide body 103, the lower connecting sleeve 108 is provided with a second cavity, a lower guide body 110 is fixedly arranged in the second cavity, two cavities which are spaced and vertically communicated are arranged on the main body 105 and respectively are a first main cavity 212 and a second main cavity 213, the first main cavity 212 vertically corresponds to the eccentric positioning groove 104 in the side wall of the upper guide body 103, the second main cavity 213 is communicated with the first cavity and the second cavity, and a first bypass hole 106 communicated with the outside and a second bypass hole 107 communicated with the second main cavity 213 are formed in the side wall of the first main cavity 212.
Above-mentioned supporter 211 is the cylinder, both ends all are provided with the recess around supporter 211, all be provided with in the recess and fill up the hoop 207, gasket 208 and metal link 209, fill up the hoop 207 for opening along the axial lead direction and have the opening, fill up the hoop 207 through opening the opening cover in the recess of supporter 211, gasket 208 is through setting up the interval cover of opening detachable on the perisporium on filling up the hoop 207, metal link 209 detachable sets up between adjacent pad hoop 207, the metal link 209 and the external intercommunication that are located the front end recess, the metal link 209 and the inner chamber intercommunication that are located the rear end recess.
A pressure spring 203 is arranged between the fishing rod 201 and the pressing cap 202, a baffle ring is arranged at the rear end of the fishing rod 201, a stepped limiting hole is arranged at the inner side of the pressing cap 202, and the pressure spring 203 is positioned between the limiting hole and the baffle ring.
A sealing ring is further arranged between the cam supporting seat 204 and the pressing cap 202.
The gasket 207 and the gasket 208 are made of plastic.
The lower guide body 110 is disposed in the second cavity through the bracket 109, the upper and lower ends of the bracket 109 are clamped between the body 105 and the lower joint 111, the lower guide body 110 is in threaded connection with the bracket 109 through an external thread, and a pin is further disposed between the lower guide body 110 and the bracket 109.
The upper end of the lower guide body 110 is provided with a guide surface, which is an inclined surface.
The middle part of the supporting body 211 and the peripheral wall of the cam supporting seat 204 are provided with recessed grooves, and sealing rings are arranged in the recessed grooves.
The bailer is a commonly used fishing device at present, and generally comprises a bailer upper joint 301, an upper cam 302, a bailing arm 303, a pushing head (fishing head) 304, a cavity bag 305, a main body 306, a lower cam 307 and a guide claw 308 from top to bottom in sequence, wherein the upper cam 302 and the lower cam 307 are respectively an upper trigger point and a lower trigger point, and the pushing head 304 and the guide claw 308 can be located in the main body 306 under normal conditions, namely do not extend out of the main body 306. When the upper cam 302 is triggered, the pushing head 304 (fishing head) opens, and when the lower cam 307 is triggered, the guide pawl 308 opens. When the escort head 304 (the fishing head) is not opened, it will be hidden in the pocket 305.
The use method of the monitoring device comprises the following steps:
connect on water injection well completion tubular column, when the corruption condition in the pit needs to be monitored, earlier place pad hoop 207 in proper order with the groove of the supporter 211 upper end of monitoring core 2, gasket 208, metal link 209, pad hoop 207 is placed in proper order to the groove of supporter 211 lower extreme, gasket 208, metal link 209, place the back that finishes, the head 304 is sent with the fishing rod 201 of monitoring core 2 with the escort of putting for fishing the ware and be connected with the fixed pin, take monitoring core 2 through first cavity by putting for fishing the ware, second owner cavity 213 and second cavity enter into the pit shaft. The throwing and fishing device is pulled upwards, the lower cam 307 and the upper cam 302 of the throwing and fishing device are both triggered, the guide claw 308 is opened after triggering, the pressing and sending head 304 is opened, the guide claw 308 supports against the guide surface of the lower guide body 110, so that the throwing and fishing device moves to the position opposite to the first main cavity 212, the pressing and sending head 304 is opened, the pressing and sending head 304 is connected with the fishing rod 201 through a fixing pin, one end of the fishing rod 201 of the monitoring core 2 can move outwards along with the pressing and sending head 304, the bottom plug 216 is still in the cavity bag 305 of the throwing and fishing device, and therefore when the throwing and fishing device is lifted, the monitoring core 2 just follows the throwing and fishing device to enter the first main cavity 212. The cam 206 of the monitoring core 2 is clamped at the expanded hole in the eccentric positioning groove 104 of the monitor, the throwing and fishing device is continuously lifted up, the throwing and fishing device is sheared off with the fixed pin of the monitoring core 2, and the monitoring core 2 is fixed in the eccentric positioning groove 104.
The groove at the upper end of the support body 211 is communicated with the first bypass hole 106, liquid in the shaft annulus acts on the metal hanging ring 209 through the first bypass hole 106 and the flow passage 215, the groove at the lower end of the support body 211 is communicated with the second bypass hole 107, and the liquid in the shaft acts on the metal hanging ring 209 through the second bypass hole 107 and the flow passage 215. The influence of the liquid in the annulus and the liquid in the oil pipe on the metal suspension ring 209 can be monitored simultaneously.
After a well is drilled, a cylindrical tube, called casing, is fixed to the formation with glue. The oil pipe which connects various downhole tools of the packer and the water distributor together is also a round cylinder. The liquid is injected into the stratum from the oil pipe, and the space between the oil pipe and the casing is called oil casing annulus, which is called annulus for short, and is also liquid.
The flow velocity, the pressure and even the water quality of the liquid in the oil pipe and the liquid in the annulus are different, so that the influence of the liquid in the annulus and the oil pipe on the monitoring device can be simultaneously detected, and the monitoring device is also cylindrical and simultaneously bears the action of the liquid in the annulus and the liquid in the oil pipe.
After monitoring core 2 acted on a period of time in the pit shaft, go into the ware of bailing down, trigger cam 302, make salvage head 304 pop out, salvage head 304 docks with salvage pole 201 on monitoring core 2, it drives salvage pole 201 rebound to lift the ware of bailing, thereby drive torsional spring 205 and rotate, make the cam 206 release on monitoring core 2, monitoring core 2 lifts the first main cavity 212 and the eccentric positioning groove 104 that breaks away from the monitor along with the ware of bailing, thereby monitoring core 2 is proposed ground, take out metal link 209 from monitoring core 2 and carry out corrosion detection, the purpose of dynamic monitoring water injection well corrosion conditions has been realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides an eccentric formula corrosion monitoring devices of water injection well which characterized in that: the monitoring device comprises a monitor (1) and a monitoring core (2), wherein the monitoring core (2) is placed in an eccentric positioning groove (104) of the monitor (1) through a fisher; two groups of detachable metal hanging rings (209) are arranged on the monitoring core (2) at intervals, wherein one group of metal hanging rings (209) are communicated with the outside through a first bypass hole (106) of the monitor (1), and the other group of metal hanging rings (209) are communicated with the inner cavity through a second bypass hole (107);
the monitor comprises an upper connector (101), an upper connecting sleeve (102), a main body (105), a lower connecting sleeve (108) and a lower connector (111) which are sequentially in threaded connection, wherein the upper connecting sleeve (102) is provided with a first cavity, an upper guide body (103) is arranged in the first cavity, the upper end of the upper guide body (103) props against the lower part of the upper connector (101), the lower end of the upper guide body (103) is fixedly connected with the upper end of the main body (105), the side wall of the lower end of the upper guide body (103) is provided with an eccentric positioning groove (104), the lower connecting sleeve (108) is provided with a second cavity, a lower guide body (110) is fixedly arranged in the second cavity, two cavities which are spaced and communicated up and down are arranged on the main body (105), namely a first main cavity (212) and a second main cavity (213), the first main cavity (212) corresponds to the eccentric positioning groove (104) on the side wall of the upper guide body (103) up and down, and the second main cavity (213) is communicated with the first cavity and the second cavity, a first bypass hole (106) communicated with the outside and a second bypass hole (107) communicated with the second main cavity (213) are formed in the side wall of the first main cavity (212);
the monitoring core sequentially comprises a fishing rod (201), a pressing cap (202), a cam supporting seat (204), a supporting body (211) and a bottom plug (216) from front to back, the rear end of the fishing rod (201) is arranged in the pressing cap (202) and can move in the pressing cap (202), the outer side of the pressing cap (202) is provided with threads, the inner side of the cam supporting seat (204) is connected with the pressing cap (202) through the threads, the cam supporting seat (204) is arranged in the cam supporting seat (204) through a torsion spring (205), the tip of a cam (206) penetrates through the outer wall of the cam supporting seat (204), the rear end of the cam supporting seat (204) is connected with the front end of the supporting body (211) through the threads, and the rear end of the supporting body (211) is connected with the bottom plug (216) through the threads;
the support body (211) is a cylinder, both ends all are provided with the recess around support body (211), all be provided with in the recess and fill up hoop (207), gasket (208) and metal link (209), fill up hoop (207) and open along the axial lead direction and have the opening, fill up hoop (207) and overlap in the recess of support body (211) through opening the opening, gasket (208) are on filling up hoop (207) through opening detachable interval cover on the perisporium, metal link (209) detachable sets up between adjacent pad hoop (207), metal link (209) that are located the front end recess communicate with the external world, metal link (209) that are located the rear end recess communicate with the inner chamber.
2. The water injection well eccentric corrosion monitoring device according to claim 1, characterized in that: a pressure spring (203) is arranged between the fishing rod (201) and the pressing cap (202), a baffle ring is arranged at the rear end of the fishing rod (201), a stepped limiting hole is formed in the inner side of the pressing cap (202), and the pressure spring (203) is located between the limiting hole and the baffle ring.
3. The water injection well eccentric corrosion monitoring device according to claim 1, characterized in that: a sealing ring is also arranged between the cam supporting seat (204) and the pressing cap (202).
4. The water injection well eccentric corrosion monitoring device according to claim 1, characterized in that: the pad hoop (207) and the pad (208) are made of plastic materials.
5. The water injection well eccentric corrosion monitoring device according to claim 2, characterized in that: lower guide body (110) passes through support (109) and sets up in the second cavity, and both ends card about support (109) is between main part (105) and lower clutch (111), and lower guide body (110) passes through external screw thread and support (109) threaded connection, still is provided with the pin between lower guide body (110) and support (109).
6. The water injection well eccentric corrosion monitoring device according to claim 2, characterized in that: the upper end of the lower guide body (110) is provided with a guide surface which is an inclined surface.
7. The water injection well eccentric corrosion monitoring device according to claim 1, characterized in that: the middle part of the supporting body (211) and the peripheral wall of the cam supporting seat (204) are provided with sunken grooves, and sealing rings are arranged in the sunken grooves.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811074482.XA CN109209344B (en) | 2018-09-14 | 2018-09-14 | Eccentric corrosion monitoring device for water injection well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811074482.XA CN109209344B (en) | 2018-09-14 | 2018-09-14 | Eccentric corrosion monitoring device for water injection well |
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| Publication Number | Publication Date |
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| CN109209344A CN109209344A (en) | 2019-01-15 |
| CN109209344B true CN109209344B (en) | 2022-07-08 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2025711C1 (en) * | 1991-01-08 | 1994-12-30 | Владислав Иванович Лукашенко | Method of measuring destruction rate in corrosion mechanical tests of metallic materials |
| CN201392307Y (en) * | 2009-02-19 | 2010-01-27 | 中国石油天然气股份有限公司 | Oil tube corrosion testing cylinder |
| CN202360083U (en) * | 2011-12-14 | 2012-08-01 | 刘晖 | Detecting device for internal corrosion and scale formation of water injection string of oilfield water injection well |
| CN205135582U (en) * | 2015-10-22 | 2016-04-06 | 中国石油天然气股份有限公司 | Bridge type eccentric injection mandrel |
| CN205936578U (en) * | 2016-06-30 | 2017-02-08 | 中国石油天然气股份有限公司 | Oil well wellhead corrosion monitor |
| CN207502364U (en) * | 2017-11-03 | 2018-06-15 | 中国石油化工股份有限公司 | A kind of inserted tubing and casing corrosion monitor |
| CN110836950A (en) * | 2018-08-16 | 2020-02-25 | 中国石油天然气股份有限公司 | Corrosion monitoring device and be used for water injection well corrosion monitoring's tubular column |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2439544Y (en) * | 2000-06-16 | 2001-07-18 | 尹婷 | Two purpose water injection mandrel for oil well/water well |
-
2018
- 2018-09-14 CN CN201811074482.XA patent/CN109209344B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2025711C1 (en) * | 1991-01-08 | 1994-12-30 | Владислав Иванович Лукашенко | Method of measuring destruction rate in corrosion mechanical tests of metallic materials |
| CN201392307Y (en) * | 2009-02-19 | 2010-01-27 | 中国石油天然气股份有限公司 | Oil tube corrosion testing cylinder |
| CN202360083U (en) * | 2011-12-14 | 2012-08-01 | 刘晖 | Detecting device for internal corrosion and scale formation of water injection string of oilfield water injection well |
| CN205135582U (en) * | 2015-10-22 | 2016-04-06 | 中国石油天然气股份有限公司 | Bridge type eccentric injection mandrel |
| CN205936578U (en) * | 2016-06-30 | 2017-02-08 | 中国石油天然气股份有限公司 | Oil well wellhead corrosion monitor |
| CN207502364U (en) * | 2017-11-03 | 2018-06-15 | 中国石油化工股份有限公司 | A kind of inserted tubing and casing corrosion monitor |
| CN110836950A (en) * | 2018-08-16 | 2020-02-25 | 中国石油天然气股份有限公司 | Corrosion monitoring device and be used for water injection well corrosion monitoring's tubular column |
Non-Patent Citations (1)
| Title |
|---|
| 远程实时测控技术在大港油田的研究应用;张宏伟 等;《石化技术》;20171128;第24卷(第11期);294页 * |
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