CN211235005U

CN211235005U - Sampling device

Info

Publication number: CN211235005U
Application number: CN201921310525.XU
Authority: CN
Inventors: 张学山; 王洪军; 王志愿; 李国伟; 孙磊; 张进平; 唐秀梅; 刘鹏; 苏星龙; 冯萌萌
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2019-08-13
Filing date: 2019-08-13
Publication date: 2020-08-11
Anticipated expiration: 2029-08-13

Abstract

The utility model discloses a sampling device belongs to oil development well testing technical field. The method comprises the following steps: the barrel is tubular, and one end of barrel has and is annular cutting edge. The one-way door is located in the barrel, the one-way door has an open mode and a closed mode, the one-way door can receive and come from under the thrust of cutting edge one side the closed mode is changeed to the open mode, if the one-way door is in the closed mode, the one-way door cuts off the inner chamber of barrel, if the one-way door is in the open mode, the inner chamber of barrel communicates. The sampling device can conveniently acquire scales on the inner wall of the oil pipe, avoids clamping accidents with the inner wall of the oil pipe, and improves the operation efficiency.

Description

Sampling device

Technical Field

The utility model relates to an oil development well testing technical field, in particular to sampling device.

Background

In the process of gas field development, after fluids such as condensate, gas, water and the like in a gas reservoir flow out of a gas layer, compounds and the like are deposited on the inner wall of an oil pipe due to the change of temperature, pressure and the balance state of oil, gas and water, so that scales are generated. Because the blocks and types of the oil and gas wells are different, the production stages of the oil and gas wells are different, the types and characteristics of the scales on the inner wall of the oil pipe are also different, and the scale samples on the inner wall of the oil pipe need to be obtained for component analysis.

At present, a sleeve scraper which is close to the pipe diameter of an oil pipe of an oil-gas well is mainly placed in the oil-gas well, and a blade on a shell of the sleeve scraper is used for scraping the inner wall of the oil pipe to obtain a sample of dirt on the inner wall of the oil pipe.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a sampling device can be convenient for take a sample, improves the operating efficiency, technical scheme is as follows:

the embodiment of the utility model provides a sampling device, which comprises a barrel body, wherein the barrel body is tubular, and one end of the barrel body is provided with an annular cutting edge;

the one-way door is located in the barrel body and has an opening state and a closing state, the one-way door can be changed from the closing state to the opening state under the thrust from one side of the cutting edge, if the one-way door is located in the closing state, the one-way door cuts off the inner cavity of the barrel body, and if the one-way door is located in the opening state, the inner cavity of the barrel body is communicated.

Optionally, the check door includes baffle and retaining ring, the retaining ring with the coaxial fixed connection of inner wall of barrel, the edge of baffle with the retaining ring is articulated, if the check door is in the closed condition, the baffle covers the hole department of retaining ring, if the check door is in the open mode, the baffle is located keeping away from of retaining ring cutting edge one side, the baffle with the hole separation of retaining ring.

Optionally, the cylinder body is provided with a fixing hole penetrating through a side wall of the cylinder body, a bolt is inserted into the fixing hole, and the bolt is connected with the retainer ring.

Optionally, one side of the baffle plate is provided with a boss matched with the inner hole of the retainer ring, if the one-way door is in the closed state, the boss is located in the inner hole of the retainer ring, and the side wall of the boss is attached to the side wall of the inner hole of the retainer ring.

Optionally, the boss is round table-shaped, and the inner hole of the retainer ring is tapered.

Optionally, the cutting edge is at an acute angle to the axis of the barrel.

Optionally, on the cylinder, the cutting edge angle of each region at the cutting edge is positively correlated to the axial distance from each region to the one-way door.

Optionally, the lateral wall of barrel has the multichannel bar opening of circumference distribution on, multichannel bar opening with the cutting edge is located the homonymy of unidirectional door, the bar opening runs through the lateral wall of barrel, and follows the axial extension of barrel reaches the cutting edge.

Optionally, the sampling device comprises 2 one-way gates, and the 2 one-way gates are arranged in the barrel at intervals.

Optionally, the barrel has a plurality of discharge holes, the discharge holes and the cutting edge being located on both sides of the one-way gate.

The embodiment of the utility model provides a beneficial effect that technical scheme brought includes at least:

one end through the barrel has and is annular cutting edge, and at sampling device's transfer in-process, the one end that will have the cutting edge is down, and the cutting edge can be to the adnexed dirt on the oil pipe inner wall cutting clearance, ensures that sampling device can pass through smoothly. The scale debris formed after the scale attached to the inner wall of the oil pipe is cut by the cutting edge can enter the cylinder from one end with the cutting edge. Through set up the check door in the barrel, the check door has open mode and closed state, and the check door can be changed to open mode from closed state under receiving the thrust that comes from cutting edge one side, and the dirt piece that gets into the barrel promotes the check door, and the check door is changed to open mode from closed state, and the dirt piece passes through the check door. After sampling device arrived predetermined position, lift sampling device, because do not have new dirt piece to get into the barrel, the ascending thrust of dirt piece to the check door disappears, the baffle changes to the closed condition from the open mode under the effect of gravity, will stay in the barrel through the dirt piece of check door. The sampling is convenient, and the operating efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a partial structural sectional view of a sampling device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a one-way door according to an embodiment of the present invention;

fig. 3 is a schematic partial structural view of a one-way door according to an embodiment of the present invention;

fig. 4 is a structural cross-sectional view of a sampling device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Fig. 1 is a partial structural sectional view of a sampling device according to an embodiment of the present invention. As shown in fig. 1, the sampling device includes: a cylinder 1 and a one-way door 3.

The cylinder 1 is tubular, and one end of the cylinder 1 is provided with an annular cutting edge 2.

The one-way door 3 is positioned in the barrel 1, and the one-way door 3 has an opening state and a closing state. The one-way door 3 can be changed from a closed state (as shown in fig. 1) to an open state by receiving a thrust from the cutting edge 2 side, if the one-way door 3 is in the closed state, the one-way door 3 blocks the inner cavity of the cylinder 1, and if the one-way door 3 is in the open state, the inner cavity of the cylinder 1 is communicated.

As shown in fig. 1, in the embodiment of the present invention, the sampling device may include 2 one-way gates 3, and the 2 one-way gates 3 are disposed in the barrel at intervals. Two one-way doors 3 arranged at intervals and the inner cavity of the cylinder body 1 form a closed sampling chamber for sampling and storing the dirt debris. It should be noted that, in other possible implementation manners, the sampling device may also include 3, 4 or more one-way doors 3, as long as it can form a sampling chamber with the inner cavity of the cylinder 1 to sample and store the dirt debris, and the embodiment of the present invention does not limit this.

Optionally, the one-way door 3 may include a baffle 31 and a retainer ring 32, the retainer ring 32 is coaxially and fixedly connected with the inner wall of the barrel 1, an edge of the baffle 31 is hinged to the retainer ring 32, if the one-way door 3 is in a closed state, the baffle 31 covers an inner hole of the retainer ring 32, if the one-way door 3 is in an open state, the baffle 31 is located on one side of the retainer ring 32 away from the cutting edge 2, and the baffle 31 is separated from the inner hole of the retainer ring 32. Fig. 2 is a schematic structural diagram of an unidirectional door provided in the embodiment of the present invention. As shown in fig. 1 and 2, the edge of the flap 31 is hinged to the retainer 32 via a rotation axis a, and the flap 31 can rotate relative to the retainer 32 about the rotation axis a. When the dirt piece that gets into the barrel passes through one-way door 3, the dirt piece applys thrust to retaining ring 32, and baffle 31 is rotated to the open mode by the closed condition, and baffle 31 separates with the hole of retaining ring 32, and the dirt piece is got into in the sample chamber by the hole of retaining ring 32. When barrel 1 stops transferring, during upwards promoting barrel 1, do not have the dirt piece to continue through one-way door 3, the thrust that the dirt piece was applyed to baffle 31 disappears, and baffle 31 is rotatory to the closed condition by the one side of keeping away from cutting edge 2 under the action of gravity, forms the hole of retaining ring 32 and covers, prevents that the dirt piece that gets into in the sample chamber from leaking by the hole of retaining ring 32, realizes the storage to the dirt piece in the sample chamber.

Exemplarily, in the embodiment of the present invention, the rotation axis a is located on one side of the retainer 32 away from the cutting edge 2, and the baffle 31 can only rotate on one side of the retainer 32 away from the cutting edge 2 through the rotation axis a, so as to prevent the dirt debris in the sampling chamber from leaking.

Optionally, the cylinder 1 has a fixing hole 11 penetrating through a side wall of the cylinder 1, a bolt 4 is inserted into the fixing hole 11, and the bolt 4 is connected to the retainer ring 32. When assembling the sampling device, the retainer ring 32 is coaxially arranged in the inner wall of the cylinder body 1, the counter bore 32 in the retainer ring 32 is aligned with the fixing hole 11, the bolt 4 is screwed inwards through the fixing hole 11 by the outer wall of the cylinder body 1, the retainer ring 32 and the cylinder body 1 are fixedly connected, and the connecting mode is simple in structure and convenient to install.

Optionally, one side of the baffle 31 has a boss 311 adapted to the inner hole of the retainer ring 32, and if the one-way door 3 is in the closed state, the boss 311 is located in the inner hole of the retainer ring 32, and a side wall of the boss 311 is attached to a side wall of the inner hole of the retainer ring 32. When the one-way door 3 is in a closed state, a gap may exist between the baffle 31 covering the retainer ring 32 and the retainer ring 32, and due to the fact that the sampling device possibly collides with a pipe wall or shakes in the moving process of the sampling device in an oil pipe, dirt and debris in the sampling chamber are easily leaked out of the sampling device from the gap. Through set up boss 311 on baffle 31, when one-way door 3 was in the closed condition, the lateral wall of boss 311 pasted mutually with the lateral wall of the hole of retaining ring 32, made baffle 31 and retaining ring 32 closely cooperate, sealed off the gap between baffle 31 and the retaining ring 32 simultaneously, strengthened sampling device's leakproofness.

Optionally, the boss 311 is circular truncated cone-shaped, and the inner hole of the retainer ring 32 is tapered. The bore diameter of the inner bore of the retainer ring 32 gradually decreases along the axis of the cylinder 1 toward the cutting edge 2, i.e., the large end of the corresponding boss 311 is far away from the cutting edge 2, and the small end is close to the cutting edge 2. Since the baffle 31 can only rotate on the side of the retainer ring 32 far away from the cutting edge 2 through the rotating shaft A, when the one-way door 3 is changed from the closed state to the open state, the large end of the boss 311 leaves the inner hole of the retainer ring 32 firstly; when the one-way door 3 is changed from the open state to the closed state, the small end of the boss 311 enters the inner hole of the retainer ring 32. Due to the design, the matching between the boss 311 and the inner hole of the retainer ring 32 is smoother, the abrasion of the boss 311 and the inner hole of the retainer ring 32 caused by interference can not occur, and the service life of the sampling device is prolonged.

Optionally, the cutting edge 2 is at an acute angle α to the axis of the barrel 1. Namely, the plane of the annular cutting edge 2 is inclined at an acute angle alpha with the axis of the cylinder 1. When carrying out the drifting operation, cutting edge 2 keeps away from part 2a of one-way door 3 and can take the lead to cutting the dirt on the oil pipe inner wall, cuts the dirt on the oil pipe inner wall for the piece, makes things convenient for sampling device to collect, avoids simultaneously that the dirt on the oil pipe inner wall leads to the fact to block through sampling device. After the part 2a of the cutting edge 2 far away from the one-way door 3 cuts the dirt on the inner wall of the oil pipe, the residual dirt chips are still possibly attached to the inner wall of the oil pipe, and then the clamping of the sampling device is possibly caused. The part 2b of the cutting edge 2 close to the one-way door 3 can cut scales on the inner wall of the oil pipe, and can also scrape the scales and fragments remained on the inner wall of the oil pipe, so that the cleaning function of the inner wall of the oil pipe is realized, and the clamping of the sampling device is prevented.

Optionally, on the barrel 1, the cutting edge angle of each region at the cutting edge 2 is positively correlated with the axial distance from each region to the one-way gate 3. The cutting edge angle is the included angle between the two faces forming the cutting edge. In the embodiment of the present invention, the cutting edge angle of the cutting edge 2 increases with the increase of the axial distance from the one-way door 3. As shown in fig. 1, the axial distance between the part 2a of the cutting edge 2 far away from the one-way gate 3 and the one-way gate 3 is farthest, the edge angle β of the part is the largest, the strength of the cutting edge 2 is also the largest, and it is ensured that the cutting edge 2 does not curl when encountering dirt for cutting; the part 2b of the cutting edge 2 close to the one-way door 3 is closest to the axial distance of the one-way door 3, the edge angle gamma of the part is minimum, the part of the cutting edge 2 mainly plays a role in scraping and cleaning scale debris remained on the inner wall of an oil pipe, the requirement on the strength of the cutting edge 2 is low, the edge angle of the area is reduced, materials can be saved, and the production cost of the sampling device is reduced.

Illustratively, in the embodiment of the present invention, β ≦ 40 °, γ ≦ 20 °, and β > γ.

Alternatively, the side wall of the barrel 1 may have a plurality of strip-shaped openings 21 distributed circumferentially, the plurality of strip-shaped openings 21 and the cutting blade 2 are located on the same side of the one-way door 3, and the strip-shaped openings 21 penetrate through the side wall of the barrel 1 and extend to the cutting blade 2 along the axial direction of the barrel 1. Multichannel bar opening 21 is cut apart into a plurality of independent parts with cutting edge 2, and when the external diameter of barrel 1 and the internal diameter of oil pipe inner wall differed greatly, can expand outward through the manual work to the section of thick bamboo wall that barrel 1 is close to the one end of cutting edge 2, makes the diameter grow of cutting edge 2, reduces the clearance between cutting edge 2 and the oil pipe inner wall. When the sampling device is transferred in-process when passing through the position that the oil pipe inner wall warp, cutting edge 2 makes cutting edge 2 warp with the produced power of oil pipe inner wall deformation position contact, and the clearance of bar opening 21 can regard as the buffer space this moment, and cutting edge 2 radially inwards takes place deformation along barrel 1 through the clearance of bar opening 21, reduces the external diameter of cutting edge 2, prevents that sampling device from being blocked by the oil pipe inner wall that warp.

Alternatively, the cylinder 1 may have a plurality of discharge holes 12, the discharge holes 12 and the cutting edges 2 being located on both sides of the one-way gate 3. Discharge hole 12 communicates the inner chamber and the outer wall of barrel 1, and when sampling device transferred, too much dirt piece can avoid the dirt piece to pile up at the inner chamber of barrel 1 outside sampling device through discharge hole 12 discharge, reduces the friction of dirt piece in barrel 1 inner wall, realizes reducing sampling device's down resistance.

Illustratively, in the embodiment of the present invention, the axis of the discharge hole 12 and the axis of the cylinder 1 have an included angle smaller than 60 °, and the discharge hole 12 is inclined in the axial direction of the cylinder 1 to the direction away from the cutting edge 2. Be the slope of angle setting with relief hole 12 on barrel 1, can reduce the pore wall of relief hole to the clastic resistance of dirt, make the clastic more smooth and easy discharge outside the sampling device by the inner chamber of barrel 1 of dirt.

Illustratively, the sampling device may further include a torsion spring 5, and the torsion spring 5 is coaxial with the rotation axis a of the shutter 31. Fig. 3 is a schematic partial structure diagram of an unidirectional door according to an embodiment of the present invention. As shown in fig. 3, the torsion spring 5 has a first support leg 51 and a second support leg 52, the first support leg 51 is connected to the shutter 31, and the second support leg 52 is connected to the retainer 32.

When there is no scale debris passing through the one-way door 3, the shutter 31 is maintained in a closed state by the elastic force of the torsion spring 5 and the gravity of the shutter 31. When the dirt debris entering the cylinder 1 passes through the one-way door 3, the dirt debris applies thrust to the retaining ring 32, the baffle plate 31 rotates from a closed state to an open state and is separated from the retaining ring 32, and the dirt debris enters the sampling chamber from an inner hole of the retaining ring 32. When no dirt debris passes through the one-way door 3, the pushing force applied by the dirt debris to the retainer ring 32 disappears, and the first support leg 51 of the torsion spring 5 applies a rotating acting force to the baffle 31 due to deformation, so that the baffle 31 rotates back to the closed state.

Fig. 4 is a structural cross-sectional view of a sampling device according to an embodiment of the present invention. As shown in FIG. 4, the sampling device may further comprise a jar 6, the jar 6 has a jar portion 61 and a jar cylinder 62, the jar portion 61 is sleeved in the jar cylinder 62, and the jar cylinder 62 is detachably connected with one side of the cylinder 1 away from the cutting edge 2. The jar body 62 and the barrel body 1 are arranged into a detachable connection structure, so that the sampling device is convenient to store when not in use. The jar barrel 62 has a stroke for the jar part 61 to move in, when the sampling device is stuck with the inner wall of the oil pipe in the lowering process, the jar part 61 collides with the jar barrel 62 downwards to provide power for the cutting blade 2 to cut the dirt on the inner wall of the oil pipe downwards, and the cutting effect is enhanced. When the sampling device is clamped by the inner wall of the oil pipe, the impact part 61 can upwards collide with the jar barrel 62 to provide upward power for the cutting edge 2, so that the impact is released.

Optionally, the sampling device further comprises a weight bar 7, the weight bar 7 being connected to the jar 61. Through setting up the weight bar 7 of being connected with jarring portion 61, can increase the whole counter weight of sampling device, overcome sampling device and transfer in-process oil pipe inner wall to sampling device's frictional force and the relative effort that dirt piece produced barrel 1. Illustratively, when the sampling device contacts dirt on the inner wall of an oil pipe and is blocked, the weighting rod 7 can be matched with the connected impact part 61 to downwards collide with the jar barrel 62, so that the jar 9 can give downward power to the cutting edge 2, and the cutting effect is enhanced. When the sampling device is clamped by the inner wall of the oil pipe, the impact part 61 can upwards collide with the jar barrel 62 to provide upward power for the cutting edge 2, and the impact releasing is realized.

Optionally, the sampling device further comprises a rope cap 8, and the rope cap 8 is connected with the weighting rod 7. Rope fastening 8's one end is connected with the weight bar 7, and the other end can be connected with well testing steel wire or cable, realizes being connected sampling device with the steel wire or the cable that are used for the well testing operation.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A sampling device, comprising:

the barrel body (1), the barrel body (1) is tubular, and one end of the barrel body (1) is provided with an annular cutting edge (2);

one-way door (3), one-way door (3) are located in barrel (1), one-way door (3) have opening state and closed state, one-way door (3) can receive come from under the thrust of cutting edge (2) one side the closed state changes to the open state, if one-way door (3) are in the closed state, one-way door (3) cut off the inner chamber of barrel (1), if one-way door (3) are in the open state, the inner chamber intercommunication of barrel (1).

2. The sampling device according to claim 1, characterized in that the one-way door (3) comprises a baffle (31) and a retainer ring (32), the retainer ring (32) is coaxially and fixedly connected with the inner wall of the barrel (1), the edge of the baffle (31) is hinged to the retainer ring (32), if the one-way door (3) is in the closed state, the baffle (31) covers the inner hole of the retainer ring (32), if the one-way door (3) is in the open state, the baffle (31) is located on the side of the retainer ring (32) far away from the cutting edge, and the baffle (31) is separated from the inner hole of the retainer ring (32).

3. The sampling device according to claim 2, characterized in that the cylinder (1) is provided with a fixing hole (11) penetrating through the side wall of the cylinder (1), a bolt (4) is inserted into the fixing hole (11), and the bolt (4) is connected with the retainer ring (32).

4. The sampling device according to claim 2, characterized in that one side of the baffle (31) is provided with a boss (311) which is matched with the inner hole of the retainer ring (32), if the one-way door (3) is in the closed state, the boss (311) is positioned in the inner hole of the retainer ring (32), and the side wall of the boss (311) is attached to the side wall of the inner hole of the retainer ring (32).

5. A sampling device according to claim 4, characterized in that the boss (311) is frustoconical and the inner bore of the collar (32) is tapered.

6. A sampling device according to any one of claims 1-5, characterized in that the cutting edge (2) is at an acute angle (α) to the axis of the barrel (1).

7. A sampling device according to claim 6, characterized in that on the barrel (1) the edge angle of each area at the cutting edge (2) is positively correlated to the axial distance of the area to the one-way gate (3).

8. The sampling device according to any one of claims 1 to 5, characterized in that the side wall of the barrel (1) is provided with a plurality of circumferentially distributed strip-shaped openings (21), the strip-shaped openings (21) and the cutting edges (2) are positioned at the same side of the one-way door (3), and the strip-shaped openings (21) penetrate through the side wall of the barrel (1) and extend to the cutting edges (2) along the axial direction of the barrel (1).

9. A sampling device according to any one of claims 1 to 5, characterized in that the sampling device comprises 2 said one-way gates (3), 2 said one-way gates (3) being arranged at intervals within the barrel (1).

10. A sampling device according to any one of claims 1 to 5, characterized in that the barrel (1) has a plurality of discharge holes (12), the discharge holes (12) and the cutting edges (2) being located on both sides of the one-way gate (3).