Low-temperature water loss instrument for well cementation cement slurry

Abstract

The utility model discloses a low-temperature water loss instrument for well cementation cement paste, which comprises a base, a vacuum refrigeration cylinder and a test cylinder, the vacuum refrigeration cylinder is fixedly arranged at the top of the base, the test cylinder is arranged inside the vacuum refrigeration cylinder, and the utility model relates to the technical field of water loss instruments. According to the low-temperature water loss instrument for the well cementation cement paste, a centralized control frame, a vertical plate and a clamp are rotationally arranged at the top of a vacuum refrigeration cylinder, an electric telescopic rod and an arc-shaped clamping plate are arranged on the side face of the vertical plate, and a slope block and a top block which are matched with the clamp for use are arranged on the two sides of a test cylinder; when the test cylinder needs to be taken out, screwed and separated from the air tap top cover and the liquid discharge bottom cover and poured out of internal cement paste, the test cylinder can be hung by the clamp and fastened by the arc-shaped clamping plate, so that the test cylinder can be conveniently and obliquely controlled through the centralized control frame and is in contact as little as possible, and the stability of the test cylinder is improved. And the air tap top cover and the liquid discharge bottom cover can be conveniently and manually screwed and separated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water loss instrument, specifically is a cementing cement slurry low temperature water loss appearance. BACKGROUND

[0002] The cementing engineering in oil and gas development usually needs to pour cement slurry into the wellbore, and requires that the cement slurry used has a specific water loss amount, if not reasonably controlled, a large amount of liquid in the cement slurry will seep into the formation, thereby reducing the liquid content in the cement slurry, increasing the consistency, and being difficult to pump or even impossible to pump, and further damaging the formation to different degrees, leading to a decrease in oil and gas production capacity, and even causing cementing accidents. In this case, a fluid loss reducer is usually added to the cement slurry to control the water loss amount, so as to ensure the safety and efficiency of the cementing process. The control of the water loss amount usually needs to be tested by using a water loss instrument, and the cement slurry testing environment is more, among which the testing under low temperature conditions is one of them, and a specific device is needed for low temperature testing.

[0003] Therefore, the utility model discloses a kind of cementing cement slurry low temperature water loss appearance cylinder cooling device, it is related to oil and gas development cementing engineering cement slurry testing device technical field, including body, bushing, base and temperature sensor, body is cylindrical structure, its upper inner wall is provided with annular groove, its lateral wall is provided with cooling liquid outlet and cooling liquid inlet, its lower lateral wall is provided with observation hole;Bushing is tubular structure, is located in the upper portion in body, its two ends outer wall is respectively contacted with the inner wall of both ends of annular groove, its inner lower portion is provided with boss;Base is disc structure, is located in the bottom of body and is fixedly connected with it;Temperature sensor is rod structure, and one end is located in the inside of annular groove;The cementing cement slurry low temperature water loss appearance cylinder cooling device provided in the application can test the water loss performance of cementing cement slurry under low temperature conditions.

[0004] Although the above-mentioned device is convenient for testing the water loss performance of cementing cement slurry under low temperature conditions, it still has some shortcomings in actual use, including the lack of a holding mechanism, which makes it inconvenient for manual separation of the top and bottom covers and the cement slurry in the pouring container in the low temperature container. Therefore, a cementing cement slurry low temperature water loss appearance is proposed to solve the existing problems. UTILITY MODEL CONTENTS

[0005] In view of the shortcomings of the prior art, the utility model provides a cementing cement slurry low temperature water loss appearance, which solves the problem of the lack of a holding mechanism in the device, which makes it inconvenient for manual separation of the top and bottom covers and the cement slurry in the pouring container in the low temperature container.

[0006] In order to achieve the above object, the utility model discloses a kind of cementing cement slurry low temperature filtration devices, including base, vacuum refrigeration cylinder and test cylinder, the vacuum refrigeration cylinder is fixedly arranged at the top of base, the test cylinder is arranged in the inside of vacuum refrigeration cylinder, both sides of the top of vacuum refrigeration cylinder are fixedly connected with handle swivel by support, the inside of two handle swivels is rotatably connected with control frame by bearing, both ends of the control frame are fixedly connected with vertical plate, two vertical plates are fixedly connected with bridle ring between, and bridle ring is provided with two, first sliding slot is opened in the both sides of test cylinder, the inside of first sliding slot is slidably connected with inclined surface block, first spring is fixedly connected between inclined surface block and first sliding slot, second sliding slot is opened in the both sides of test cylinder and at the bottom of first sliding slot, the inside of second sliding slot is slidably connected with top block, second spring is fixedly connected between top block and second sliding slot.

[0007] Preferably, the top and bottom of the test cylinder are respectively threadedly connected with a gas nozzle top cover and a drainage bottom cover, the two sides of the vacuum refrigeration cylinder are threadedly connected with threaded rods by opening threaded grooves, one end of the threaded rod is rotatably provided with an insertion block by a bearing, and the two sides of the gas nozzle top cover are both provided with insertion grooves matched with the insertion block.

[0008] Preferably, the inside of the drainage bottom cover is placed with a filter screen, filter paper and rubber pad from bottom to top.

[0009] Preferably, the opposite sides of the two vertical plates are both fixedly connected with electric telescopic rods, and one side of the extended end of the electric telescopic rod is fixedly connected with an arc-shaped clamping plate matched with the test cylinder.

[0010] Preferably, the back side of the handle swivel is fixedly connected with a placement seat matched with the control frame by a support, and the inside of the placement seat is threadedly connected with a positioning screw rod.

[0011] Beneficial effects

[0012] The utility model provides a kind of cementing cement slurry low temperature filtration devices.Compared with prior art, it has the following beneficial effects: by rotatingly arranging control frame, vertical plate and bridle ring on the top of vacuum refrigeration cylinder, and arranging electric telescopic rod and arc-shaped clamping plate on the side of vertical plate, and arranging inclined surface block and top block matched with bridle ring on the both sides of test cylinder, when test cylinder needs to be taken out and screwed off gas nozzle top cover and drainage bottom cover, and when internal cement slurry is poured, test cylinder can be hung by bridle ring and fastened by arc-shaped clamping plate, so that test cylinder is conveniently manually screwed off gas nozzle top cover and drainage bottom cover by tilting control by control frame and as little as possible contact. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1The utility model discloses an external structure schematic view of the utility model;

[0014] Figure 2 The utility model discloses the sectional view of the utility model test cylinder structure;

[0015] Figure 3 The utility model discloses Figure 2 The utility model discloses the partial close -up of B place in the utility model;

[0016] Figure 4 The utility model discloses Figure 2 The utility model discloses the partial close -up of B place in the utility model;

[0017] Figure 5 The utility model discloses the demonstration drawing of the utility model test cylinder structure;

[0018] Figure 6 The utility model discloses the utility model placement seat and the development view of positioning screw structure;

[0019] Figure 7 The utility model discloses Figure 2 The utility model discloses the partial close -up of C place in the utility model;

[0020] Figure 8 The utility model discloses the development view of the internal structure of the utility model drainage bottom cover.

[0021] In the drawing: 1, base; 2, vacuum refrigeration cylinder; 3, test cylinder; 4, handle ring; 5, control frame; 6, vertical board; 7, bundle ring; 8, first sliding groove; 9, inclined surface block; 10, first spring; 11, second sliding groove; 12, top block; 13, second spring; 14, threaded rod; 15, plug block; 16, insertion slot; 17, air nozzle top cover; 18, drainage bottom cover; 19, filter screen plate; 20, filter paper; 21, rubber pad; 22, electric telescopic rod; 23, arc clamping plate; 24, placement seat; 25, positioning screw. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model.

[0023] Please refer to Figures 1-8The utility model provides a technical scheme: a kind of cementing cement slurry low temperature filtration instrument, including base 1, vacuum refrigeration cylinder 2 and test cylinder 3, vacuum refrigeration cylinder 2 is fixedly arranged at the top of base 1, test cylinder 3 is arranged inside vacuum refrigeration cylinder 2, the top and bottom of test cylinder 3 are respectively threadedly connected with air cock top cover 17 and drainage bottom cover 18, the both sides of vacuum refrigeration cylinder 2 are threadedly connected with threaded rod 14 by being equipped with screw groove, one end of threaded rod 14 is rotatably provided with plug 15 by bearing, the both sides of air cock top cover 17 are equipped with the insertion slot 16 matched with plug 15, drainage bottom cover 18 is placed with filter screen plate 19, filter paper 20 and rubber pad 21 from bottom to top inside.

[0024] Further: for the convenience of test cylinder 3 is held operation, avoid excessive contact test cylinder 3, cause the problem of low temperature discomfort to human body, the both sides of vacuum refrigeration cylinder 2 top are fixedly connected with handle swivel ring 4 by support, the inside of two handle swivel rings 4 is rotatably connected with control frame 5 by bearing, the both ends of control frame 5 are fixedly connected with vertical plate 6, two vertical plates 6 are fixedly connected with binding ring 7, and binding ring 7 is provided with two, the both sides of test cylinder 3 are equipped with first sliding slot 8, the inside of first sliding slot 8 is slidably connected with inclined block 9, first spring 10 is fixedly connected between inclined block 9 and first sliding slot 8, the both sides of test cylinder 3 and located the bottom of first sliding slot 8 are equipped with second sliding slot 11, the inside of second sliding slot 11 is slidably connected with top block 12, second spring 13 is fixedly connected between top block 12 and second sliding slot 11, the opposite side of two vertical plates 6 is fixedly connected with electric telescopic rod 22, the side of the extension end of electric telescopic rod 22 is fixedly connected with arc-shaped clamping plate 23 matched with test cylinder 3, the rear side of handle swivel ring 4 is fixedly connected with placing seat 24 matched with control frame 5 by support, the inside of placing seat 24 is threadedly connected with positioning screw 25.

[0025] When using, the refrigerant is passed into the inside of vacuum refrigeration cylinder 2 in advance, then filter screen plate 19, filter paper 20 and rubber pad 21 are placed in the inside of drainage bottom cover 18 in order, then drainage bottom cover 18 is screwed at the bottom of test cylinder 3, then cement slurry is poured into the inside of test cylinder 3, then air cock top cover 17 is screwed at the top of test cylinder 3, then test cylinder 3 is lowered, so that test cylinder 3 falls into the inside of vacuum refrigeration cylinder 2, then test cylinder 3 is locked by the cooperation of threaded rod 14, plug 15 and insertion slot 16, then measuring cup is placed at the bottom of drainage bottom cover 18, and pressure gas pipe is connected at the top of air cock top cover 17, and pressure is applied to the inside of test cylinder 3 under the condition that vacuum refrigeration cylinder 2 continuously refrigerates test cylinder 3.

[0026] When taking out the test cylinder 3, the worker holds the air nozzle top cover 17 by the gloves and pulls the test cylinder 3 upward, so that the test cylinder 3 is inserted into the inside of the two clamps 7. When the test cylinder 3 is taken out from the inside of the vacuum refrigeration cylinder 2, the inclined blocks 9 on both sides of the test cylinder 3 are clamped on the upper clamp 7, and the top block 12 is clamped on the bottom of the lower clamp 7. Then, the electric telescopic rod 22 is started, so that the electric telescopic rod 22 drives the arc-shaped clamping plate 23 to clamp the outer wall of the test cylinder 3. Then, the positioning screw 25 is unscrewed in the reverse direction, so that the positioning screw 25 is disengaged from the limiting of the control frame 5. Then, the operator can control the inclination of the test cylinder 3 by the control frame 5, and conveniently unscrew the air nozzle top cover 17 and the liquid discharge bottom cover 18 in the reverse direction without excessive contact.

Claims

1. A low-temperature fluid loss instrument for cement slurry, comprising a base (1), a vacuum refrigeration cylinder (2) and a test cylinder (3), the vacuum refrigeration cylinder (2) is fixedly arranged on the top of the base (1), and the test cylinder (3) is arranged in the vacuum refrigeration cylinder (2), characterized in that: Both sides of the top of the vacuum refrigeration cylinder (2) are fixedly connected with handle swivels (4) through supports, the interiors of the two handle swivels (4) are commonly rotationally connected with a control frame (5) through bearings, both ends of the control frame (5) are fixedly connected with vertical plates (6), two fixedly connected between the two vertical plates (6) are binding rings (7), the test cylinder (3) is provided with two first sliding grooves (8) on both sides, the interiors of the first sliding grooves (8) are slidably connected with inclined blocks (9), the first sliding grooves (8) and the inclined blocks (9) are fixedly connected with first springs (10), the two sides of the test cylinder (3) and the bottoms of the first sliding grooves (8) are provided with second sliding grooves (11), the interiors of the second sliding grooves (11) are slidably connected with top blocks (12), the second sliding grooves (11) and the top blocks (12) are fixedly connected with second springs (13).

2. A low temperature fluid loss apparatus for cement slurries according to claim 1, characterized in that: The top and bottom of the test cylinder (3) are respectively threadedly connected with an air nozzle top cover (17) and a drainage bottom cover (18), both sides of the vacuum refrigeration cylinder (2) are threadedly connected with threaded rods (14) through the opening of threaded grooves, one end of the threaded rod (14) is rotationally provided with an insertion block (15) through a bearing, both sides of the air nozzle top cover (17) are provided with insertion grooves (16) matched with the insertion block (15).

3. A low temperature fluid loss apparatus for cement slurries according to claim 2, characterized in that: The interiors of the drainage bottom cover (18) are placed with a filter screen plate (19), filter paper (20) and rubber pads (21) from bottom to top.

4. A low temperature fluid loss apparatus for cement slurries according to claim 1, characterized in that: Both sides of the two vertical plates (6) are fixedly connected with electric telescopic rods (22), one side of the extended end of the electric telescopic rod (22) is fixedly connected with an arc-shaped clamping plate (23) matched with the test cylinder (3).

5. A low temperature fluid loss apparatus for cement slurries according to claim 1, characterized in that: The back side of the handle swivel (4) is fixedly connected with a placing seat (24) matched with the control frame (5) through a support, the interior of the placing seat (24) is threadedly connected with a positioning screw rod (25).

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