CN110887659A - Experimental device for evaluating safety of high-temperature high-pressure test circulating valve - Google Patents

Experimental device for evaluating safety of high-temperature high-pressure test circulating valve Download PDF

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Publication number
CN110887659A
CN110887659A CN201911353681.9A CN201911353681A CN110887659A CN 110887659 A CN110887659 A CN 110887659A CN 201911353681 A CN201911353681 A CN 201911353681A CN 110887659 A CN110887659 A CN 110887659A
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China
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test
valve
circulating valve
output pipe
circulating
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CN201911353681.9A
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CN110887659B (en
Inventor
王尔钧
魏安超
陈江华
韩成
黄亮
丛川波
李祝军
张涛
任松涛
李文拓
梅明阳
张超
康文泉
杨玉豪
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China National Offshore Oil Corp CNOOC
CNOOC China Ltd Zhanjiang Branch
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China National Offshore Oil Corp CNOOC
CNOOC China Ltd Zhanjiang Branch
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/003—Machine valves

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  • General Physics & Mathematics (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

The invention discloses an experimental device for evaluating the safety of a high-temperature and high-pressure test circulating valve, which comprises a heating box, wherein an electric heating pipe is arranged in the heating box, high-density test liquid is arranged in the heating box, the test circulating valve is arranged in the high-density test liquid, one end of the test circulating valve is provided with a first test plug, the other end of the test circulating valve is provided with a second test plug, a rupture disc is arranged in the test circulating valve, the outer side surface of the test circulating valve is provided with a bypass hole, a ball valve is arranged in the test circulating valve, a transfusion pipeline is arranged above the test circulating valve, a mud pump and a booster pump are arranged on the transfusion pipeline, and a first output pipe, a second output pipe, a. The invention can realize safety test analysis and evaluation experiments on the rupture disk breaking pressure test, the ball valve up-and-down pressure test, the circulating well killing and other test conditions of the well-entering test circulating valve in the environment of high-temperature and high-density test liquid.

Description

Experimental device for evaluating safety of high-temperature high-pressure test circulating valve
Technical Field
The invention relates to an experimental device for evaluating the safety of a high-temperature and high-pressure test circulating valve.
Background
The Yingqiong basin is one of three high-temperature and high-pressure areas in the world, oil and gas resources are rich, oil and gas are found in high-temperature and high-pressure exploratory wells of the Yingqiong basin in recent years, high-temperature and high-pressure testing operation is frequent, the bottom temperature of the drilled high-temperature and high-pressure exploratory well is close to 200 ℃, the formation pressure coefficient exceeds 2.3, the severe temperature and pressure environment causes great challenge to the testing operation, the testing operation is mainly completed through a testing pipe column, a testing circulating valve is a core component of the testing pipe column, the tool mainly comprises a ball valve, a connecting rod, a mandrel, a rupture disc, a bypass hole and the like. The failure risk of the testing circulating valve in the testing operation process of the high-temperature high-pressure well is extremely high at present, and because the bottom temperature of the high-temperature high-pressure well is high, and the high-density test liquid with high solid content is used, the conditions that the ball valve of a valve tool is not tightly sealed, a rupture disc is broken in advance or cannot be broken according to the designed pressure, a bypass hole cannot be opened, a sealing ring fails and the like often occur in the underground high-temperature environment of the test circulating valve, causing the complex situation of high-temperature and high-pressure test operation to frequently occur and seriously influencing the high-temperature and high-pressure oil-gas exploration process of the waringle basin, therefore, before the high-temperature and high-pressure test operation, the safety and reliability of the circulating valve entering the well to be tested need to be evaluated by a reasonable and strict performance detection technology or method, the safety detection of the circulating valve to be tested is required to be simulated as much as possible under the field test working condition, but currently, no proper method and device exist for safety detection and evaluation of the test tools under high-temperature and high-pressure environments.
Disclosure of Invention
The invention aims to provide an experimental device for evaluating the safety of a high-temperature and high-pressure test circulating valve, which can realize safety test analysis and evaluation experiments on the test working conditions of a rupture disk breaking pressure test, a ball valve up-down pressure test, a circulating kill well and the like of the test circulating valve before entering a well under the environment of high-temperature and high-density test liquid.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an experimental apparatus for be used for evaluating high temperature high pressure test circulation valve security, including the heating cabinet, the heating cabinet in be equipped with electric heating pipe, the heating cabinet in be equipped with high density test liquid, the test circulation valve sets up high density test liquid in, the one end of test circulation valve be equipped with first test end cap, the other end of test circulation valve be equipped with second test end cap, the test circulation valve in be equipped with the rupture disc, the lateral surface of test circulation valve be equipped with the by pass hole, the test circulation valve in be equipped with the ball valve, the top of test circulation valve be equipped with the infusion pipeline, the infusion pipeline on be equipped with slush pump and booster pump, the infusion pipeline on be equipped with first output tube, second output tube, third output tube and fourth output tube, first output tube intercommunication be in first test end cap on, the first output pipe on be equipped with first manometer and first stop valve, the second output pipe be located the rupture disc in, the second output pipe on be equipped with second manometer and second stop valve, the second manometer be located the circulation test valve with the second stop valve between, the third output pipe be located the bypass hole, the third output pipe on be equipped with third manometer and third stop valve, the third manometer be located the circulation test valve with the third stop valve between, the fourth output pipe intercommunication be in the second test end cap in, the fourth output pipe on be equipped with fourth manometer and fourth stop valve.
Further, the second output tube with the lateral surface of test circulation valve between be equipped with first annular seal cover, first annular seal cover with the test circulation valve between first annular seal cover with the rupture disc between be equipped with first sealing washer respectively, the third output tube with the lateral surface of test circulation valve between be equipped with second annular seal cover, second annular seal cover with the test circulation valve between second annular seal cover with the by pass port between be equipped with the second sealing washer respectively.
Furthermore, a cavity is arranged in the heating box, the electric heating pipe is positioned in the cavity, and the high-density test liquid is positioned outside the cavity.
Furthermore, a fixed seat is arranged between the bottom surface of the heating box and the testing circulating valve.
The invention has the beneficial effects that: the invention can simulate the high-temperature high-density test liquid environment, and before entering the well, the safety test analysis and evaluation experiments under the test working conditions of rupture disk breaking pressure of the test circulating valve, ball valve up-and-down pressure test, circulating well killing and the like under the high-temperature high-density test liquid environment are realized.
Drawings
Fig. 1 is a sectional view of an experimental apparatus for evaluating safety of a high-temperature high-pressure test circulation valve according to the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is an enlarged view at B in fig. 1.
Figure 4 is a cross-sectional view of a first test plug according to the present invention.
Figure 5 is a cross-sectional view of a second test plug according to the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, an experimental apparatus for evaluating safety of a high-temperature and high-pressure circulating testing valve includes a heating box 1, an electric heating tube 2 is disposed in the heating box 1, a high-density testing liquid 3 is disposed in the heating box 1, the circulating testing valve 4 is disposed in the high-density testing liquid 3, a first testing plug 5 is disposed at one end of the circulating testing valve 4, a second testing plug 6 is disposed at the other end of the circulating testing valve 4, a rupture disc 7 is disposed in the circulating testing valve 4, a bypass hole 8 is disposed on an outer side surface of the circulating testing valve 4, a ball valve 9 is disposed in the circulating testing valve 4, a liquid conveying pipeline 10 is disposed above the circulating testing valve 4, a slurry pump 11 and a booster pump 12 are disposed on the liquid conveying pipeline 10, and a first output pipe 13 is disposed on the liquid conveying pipeline 10, A second output pipe 14, a third output pipe 15 and a fourth output pipe 16, wherein the first output pipe 13 is communicated with the first testing plug 5, the first output pipe 13 is provided with a first pressure gauge 17 and a first stop valve 18, the second output pipe 14 is positioned in the rupture disk 7, a second pressure gauge 19 and a second stop valve 20 are arranged on the second output pipe 14, the second pressure gauge 19 is positioned between the circulation test valve 4 and the second stop valve 20, the third output pipe 15 is positioned in the bypass hole 8, a third pressure gauge 21 and a third stop valve 22 are arranged on the third output pipe 15, said third pressure gauge 21 is located between said cycle test valve 4 and said third stop valve 22, the fourth output pipe 16 is communicated with the second testing plug 6, and a fourth pressure gauge 23 and a fourth stop valve 24 are arranged on the fourth output pipe 16.
In the embodiment 1, the electric heating tube 2 starts to heat the high-density test solution 3 in the heating box 1 to the temperature required by the experiment, opens the first stop valve 18 and the fourth stop valve 24, closes the second stop valve 20 and the third stop valve 22, opens the slurry pump 11, inputs the test solution for the experiment into the liquid conveying pipeline 10, the test solution for the experiment and the high-density test solution 3 belong to the same solution, the flow path of the test solution for the experiment is the slurry pump 11, the liquid conveying pipeline 10, the fourth stop valve 24, the fourth output pipe 16, the second test plug 6, the test circulation valve 4 and the ball valve 9, the first testing plug 5, the first output pipe 13, the first stop valve 18, the liquid conveying pipeline 10, the booster pump 12 and the mud pump 11 realize the circular flow of the testing liquid for the experiment, and the working condition of the testing liquid for the experiment circulating in the well of the testing circulating valve 4 can be simulated.
Embodiment 2, the experimental temperature of the high-density test solution 3 is kept unchanged, the second stop valve 20 is opened, the first stop valve 18, the third stop valve 22 and the fourth stop valve 24 are closed, the slurry pump 11 and the booster pump 12 are started, the pressure is gradually increased to the pressure value of the rupture disk 7, the pressure value displayed by the second pressure gauge 19 is instantly decreased through observation, the pressure value displayed by the third pressure gauge 21 is instantly increased, the rupture disk 7 can be judged to be ruptured, the bypass hole 8 is opened, and the working conditions of downhole rupture disk 7 breaking and bypass hole 8 opening are simulated.
Embodiment 3, keep the experimental temperature of high density test solution 3 unchanged, open second stop valve 20 and third stop valve 22, close first stop valve 18 and fourth stop valve 24, start slush pump 11 and booster pump 12, pressurize gradually to the lower seal pressure test experimental value of ball valve 9, if the pressure value that obtains second manometer 19 demonstration and does not descend, the pressure value that third manometer 21 demonstration does not increase, alright judge that the lower seal pressure test of ball valve 9 is qualified, simulate the operating mode that the lower part of ball valve 9 was tested to the pressure in the pit.
Embodiment 4, keep the experimental temperature of high density test solution 3 unchanged, open third stop valve 22 and fourth stop valve 24, close first stop valve 18 and second stop valve 20, start slush pump 11 and booster pump 12, pressurize gradually to the upper seal pressure test experimental value of ball valve 9, if the pressure value that obtains third manometer 21 demonstration does not drop, the pressure value that first manometer 17 demonstration does not increase, alright judge that the upper seal pressure test of ball valve 9 is qualified, simulate the operating mode that the upper portion of ball valve 9 was tested to the pressure in the pit.
In example 5, the experimental temperature of the high-density test solution 3 was kept constant, the third stop valve 22 and the fourth stop valve 24 were opened, the first stop valve 18 and the second stop valve 20 were closed, the slurry pump 11 was started, and the test solution for the experiment was started to circulate, and the test solution for the experiment flowed through the slurry pump 11, the fluid delivery line 10, the fourth stop valve 24, the fourth output line 16, the second test plug 6, the bypass hole 8, the third output line 15, the third stop valve 22, the fluid delivery line 10, the booster pump 12, and the slurry pump 11, and the working conditions of the test solution for the kill-well circulation experiment at the end of the downhole test operation were simulated.
Second output tube 14 with the lateral surface of test circulation valve 4 between be equipped with first annular seal cover 25, first annular seal cover 25 with test circulation valve 4 between first annular seal cover 25 with rupture disk 7 between be equipped with first sealing washer 26 respectively, third output tube 15 with the lateral surface of test circulation valve 4 between be equipped with second annular seal cover 27, second annular seal cover 27 with test circulation valve 4 between second annular seal cover 27 with by pass through hole 8 between be equipped with second sealing washer 28 respectively. The first annular sealing sleeve 25 and the second annular sealing sleeve 27 are made of high-temperature-resistant and high-pressure-resistant materials, the first annular sealing sleeve 25 can seal a joint gap between the second output pipe 14 and the testing circulating valve 4, and the second annular sealing sleeve 27 can seal a joint gap between the third output pipe 15 and the testing circulating valve 4, so that the internal environment of the testing circulating valve 4 can be in a high-temperature and high-pressure state required by an experiment in the implementation process, and the influence on an experiment result caused by the leakage of test liquid for the experiment from the gap is avoided.
Heating cabinet 1 in be equipped with cavity 29, electric heating pipe 2 be located cavity 29 in, high density test liquid 3 be located cavity 29 outside, electric heating pipe 2 and high density test liquid 3 are kept apart to cavity 29's design, under the prerequisite that electric heating pipe 2 heats for high density test liquid 3, avoid electric heating pipe 2 and high density test liquid 3 to contact each other. Prevent the high-density test liquid 3 from being corroded or adhered to the electric heating tube 2 to cause the burning out of the electric heating tube 2,
a fixed seat 30 is arranged between the bottom surface of the heating box 1 and the testing circulating valve 4. The fixing seat 30 is used for fixing and supporting the test circulation valve 4.

Claims (4)

1. The utility model provides an experimental apparatus for be used for evaluating high temperature high pressure test circulating valve security, its characterized in that is including heating cabinet (1), heating cabinet (1) in be equipped with electric heating pipe (2), heating cabinet (1) in be equipped with high density test liquid (3), test circulating valve (4) set up high density test liquid (3) in, the one end of test circulating valve (4) be equipped with first test end cap (5), the other end of test circulating valve (4) be equipped with second test end cap (6), test circulating valve (4) in be equipped with rupture disc (7), the lateral surface of test circulating valve (4) be equipped with by pass hole (8), test circulating valve (4) in be equipped with ball valve (9), the top of test circulating valve (4) be equipped with infusion line (10), infusion line (10) on be equipped with slush pump (11) and booster pump (12), the infusion pipeline (10) is provided with a first output pipe (13), a second output pipe (14), a third output pipe (15) and a fourth output pipe (16), the first output pipe (13) is communicated with the first testing choke plug (5), the first output pipe (13) is provided with a first pressure gauge (17) and a first stop valve (18), the second output pipe (14) is positioned in the rupture disc (7), the second output pipe (14) is provided with a second pressure gauge (19) and a second stop valve (20), the second pressure gauge (19) is positioned between the circulation testing valve (4) and the second stop valve (20), the third output pipe (15) is positioned in the bypass hole (8), the third output pipe (15) is provided with a third pressure gauge (21) and a third stop valve (22), the third pressure gauge (21) is positioned between the circulating test valve (4) and the third stop valve (22), the fourth output pipe (16) is communicated with the second test plug (6), and the fourth output pipe (16) is provided with a fourth pressure gauge (23) and a fourth stop valve (24).
2. The experimental device for evaluating the safety of the circulating valve for the high-temperature and high-pressure test according to claim 1, wherein a first annular sealing sleeve (25) is arranged between the second output pipe (14) and the outer side surface of the test circulating valve (4), first sealing rings (26) are respectively arranged between the first annular sealing sleeve (25) and the test circulating valve (4) and between the first annular sealing sleeve (25) and the rupture disk (7), a second annular sealing sleeve (27) is arranged between the third output pipe (15) and the outer side surface of the test circulating valve (4), and second sealing rings (28) are respectively arranged between the second annular sealing sleeve (27) and the test circulating valve (4) and between the second annular sealing sleeve (27) and the bypass hole (8).
3. The experimental device for evaluating the safety of the circulating valve in the high-temperature and high-pressure test according to claim 2, characterized in that a chamber (29) is arranged in the heating box (1), the electric heating pipe (2) is positioned in the chamber (29), and the high-density test liquid (3) is positioned outside the chamber (29).
4. The experimental device for evaluating the safety of the circulating valve for the high-temperature and high-pressure test according to claim 3, characterized in that a fixed seat (30) is arranged between the bottom surface of the heating box (1) and the circulating valve for the test (4).
CN201911353681.9A 2019-12-25 2019-12-25 Experimental device for evaluating safety of high-temperature high-pressure test circulating valve Active CN110887659B (en)

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CN201911353681.9A CN110887659B (en) 2019-12-25 2019-12-25 Experimental device for evaluating safety of high-temperature high-pressure test circulating valve

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Application Number Priority Date Filing Date Title
CN201911353681.9A CN110887659B (en) 2019-12-25 2019-12-25 Experimental device for evaluating safety of high-temperature high-pressure test circulating valve

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GB1461893A (en) * 1974-05-15 1977-01-19 Camco Inc Well testing apparatus
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