CN206707692U - A kind of large-scale gas drilling kill-job analogue means - Google Patents

Abstract

The utility model relates to a large-scale gas drilling and killing simulation device, which comprises a high-pressure gas cylinder, a throttle valve, a pressure gauge, a flow meter, a pressure sensor, an organic transparent glass tube, a blue plastic core tube, a discharge valve and a discharge pipe , pumps, cameras. Clean water is pumped into the blue plastic core pipe to simulate the pumping process of killing mud. The throttle valve adjusts the flow of clean water to simulate the injection volume of drilling fluid. High-pressure gas cylinders, throttle valves, pressure gauges, and flow meters are used to simulate and control the formation gas production. The bottom and top of the organic transparent glass tube are equipped with pressure sensors on the symmetrical side of the wellbore, and two cameras are respectively installed on the transparent organic transparent glass tube to record the changes of the gas-liquid two-phase flow in the wellbore during the entire experiment. The utility model can more realistically simulate the gas drilling and killing process, has simple structure, convenient operation and easy observation, provides reliable experimental reference for actual gas drilling and killing operations, and is convenient for optimizing construction schemes.

Description

A large-scale gas drilling and killing simulation device

technical field

The utility model relates to the field of gas drilling, in particular to a large-scale gas drilling and killing simulation device.

Background technique

The number of gas drilling accounts for about 30% of the total onshore oil and gas drilling in the world. Compared with conventional liquid drilling, it has the advantages of faster drilling speed, overcoming lost circulation, timely discovery of oil and gas layers, and protection of reservoirs. Drilling practices at home and abroad show that gas drilling With its unique drilling technology, compared with conventional drilling, it can reduce the consumption of drill bits by 2/3, increase the ROP by 4 to 14 times, save the cost of drilling fluid and shorten the construction period. However, when a gas drilling well encounters a high-pressure and high-yield gas reservoir, if the wellhead does not have complete well control equipment and does not meet the conditions of snubbing and tripping operations, the well killing operation must be carried out for subsequent well completion. Conventional mud drilling is quite different from flood and kill wells. The original intention of gas drilling to open production layers is to protect reservoirs. At this time, mud is used to kill wells. Too high mud density may cause bottomhole pressure to be much higher than formation pressure after well killing. Serious damage to the reservoir, low mud density may lead to well kill failure, so the control of wellhead back pressure is particularly important. On the basis of protecting the reservoir, set the appropriate mud density, the mud pump provides the appropriate displacement, and cooperate with the appropriate wellhead back pressure control, so that the liquid column can be successfully established in the wellbore annulus, and the injected killing mud will not be blown out by the air flow. Suppress the gas layer in the fastest time, while reducing the damage to the reservoir as much as possible. At present, there is no gas drilling and killing experiment instrument. Therefore, this paper provides a large-scale gas drilling and killing simulation device. This experimental device can simulate the gas drilling and killing process more realistically in terms of size and function, and is easy to observe. Clearly and clearly responding to the changes in parameters such as flow pattern, bottom hole pressure, and gas production during the process of gas drilling and killing, it provides a reliable experimental reference for actual gas drilling and killing operations, and facilitates the optimization of construction plans.

Contents of the invention

The technical problem solved by the utility model is to provide a large-scale gas drilling and killing simulation device, which can simulate the gas drilling and killing process more realistically, is easy to observe, and can clearly and clearly reflect the flow pattern, bottom hole and Changes in parameters such as pressure and gas production rate provide reliable experimental references for actual gas drilling and killing operations, and facilitate the optimization of construction plans.

The technical scheme adopted in the utility model is:

A large-scale gas drilling and killing simulation device, mainly composed of high-pressure gas cylinders, throttle valves, pressure gauges, flow meters, pressure sensors, organic transparent glass tubes, blue plastic core tubes, discharge valves, discharge pipes, pumps, Camera composition. Among them: the clean water is connected to the throttle valve B, pressure gauge C, flowmeter B and blue plastic core tube in sequence by the pump, and the high-pressure gas cylinder is connected to the throttle valve A, pressure gauge A, flowmeter A and transparent glass tube in sequence, The discharge valve is connected with the pressure gauge B and the top of the organic transparent glass tube in sequence. Camera A and camera B are respectively installed in the center of the upper 1/2 and lower 1/2 of the organic transparent glass tube, and pressure sensors A, B, and pressure sensors are installed on the bottom and top of the organic transparent glass tube on the symmetrical side of the wellbore. Sensor C and pressure sensor D can read the real-time pressure of two places, which are used to simulate the bottom hole pressure and wellhead pressure in actual working conditions; the discharge pipe and the discharge valve are connected to the top of the organic transparent glass tube, and the discharge can be adjusted by adjusting the discharge pressure. The opening of the valve can simulate accident conditions such as well killing failure, blowout, and well kick.

The utility model can more realistically simulate the gas drilling and killing process, and has simple structure, convenient operation, easy observation, clear and definite reaction gas flow pattern, bottom hole pressure, gas production and other parameter changes in the drilling and killing process, which is the real gas Drilling and killing operations provide a reliable experimental reference, which facilitates the optimization of construction schemes.

Description of drawings

Fig. 1 is a schematic diagram of a large-scale gas drilling and killing simulation device of the present utility model.

In Figure 1: 1. High-pressure cylinder, 2. Throttle valve A, 3. Pressure gauge A, 4. Flowmeter A, 5. Organic transparent glass tube, 6. Blue plastic core tube, 7. Pressure gauge B, 8. Drain valve, 9. Drain pipe, 10. Pressure sensor A, 11. Pressure sensor B, 12. Pressure sensor C, 13. Pressure sensor D, 14. Camera A, 15. Camera B, 16. Flow meter B, 17. Pressure gauge C, 18. Throttle valve B, 19. Pump.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, a large-scale gas drilling and killing simulation device of the present utility model consists of a high-pressure gas cylinder 1, a throttle valve A2, a pressure gauge A3, a flow meter A4, an organic transparent glass tube 5, and a blue plastic core tube 6 , pressure gauge B7, discharge valve 8, discharge pipe 9, pressure sensor A10, pressure sensor B11, pressure sensor C12, pressure sensor D13, camera A14, camera B15, flow meter B16, pressure gauge C17, throttle valve B18 and The pump 19 is composed. The organic transparent glass tube 5 is used to simulate the wellbore casing, the blue plastic core tube 6 is used to simulate the drill string, and the clean water is pumped into the blue plastic core tube by the pump 19 through the pipeline equipped with a throttle valve B18, a pressure gauge C17 and a flow meter B16 6 to simulate the pumping process of killing mud, the flow rate of clear water can be adjusted through the throttle valve B18 to simulate the injection volume of drilling fluid under different working conditions; The pipeline connected to the pipe 5 is equipped with a throttle valve A2, a pressure gauge A3, and a flowmeter A4 in order to simulate and control the formation gas production. This device can be used to simulate well killing conditions with different gas production rates; the discharge pipe 9 and the discharge valve 8 connected to the top of the organic transparent glass tube 5 can simulate accident conditions such as well killing failure, blowout, and well kick. The bottom and top of glass tube 5 are equipped with pressure sensor A10, pressure sensor B11, pressure sensor C12, and pressure sensor D13 on the symmetrical side of the wellbore, which can read the real-time pressure at two places, which are equivalent to the bottom hole pressure in actual working conditions and wellhead pressure, the camera A14 and the camera B15 are respectively installed in the center of the upper 1/2 and the center of the lower 1/2 of the transparent organic transparent glass tube 5, and are used to record the change of the liquid level and the gas in the wellbore during the whole experiment. Liquid two-phase flow changes, the device can accurately and truly simulate the gas drilling and killing process, provide a reliable experimental reference for the actual gas drilling and killing operations, and facilitate the optimization of construction plans.

Claims (1)

1. A large-scale gas drilling and killing simulation device, mainly composed of a high-pressure gas cylinder (1), a throttle valve A (2), a pressure gauge A (3), a flow meter A (4), and an organic transparent glass tube (5) , blue plastic core tube (6), pressure gauge B (7), drain valve (8), drain pipe (9), pressure sensor A (10), pressure sensor B (11), pressure sensor C (12 ), pressure sensor D (13), camera A (14), camera B (15), flow meter B (16), pressure gauge C (17), throttle valve B (18), and pump (19). It is characterized in that: the high-pressure gas cylinder (1) is sequentially connected with the throttle valve A (2), the pressure gauge A (3), the flow meter A (4) and the transparent glass tube (5), and the discharge valve (8) is sequentially connected with the pressure Gauge B (7) and organic transparent glass tube (5) are connected at the top; clean water is pumped in by the pump (19) through the pipeline equipped with throttle valve B (18), pressure gauge C (17) and flow meter B (16) In the blue plastic core tube (6), the throttle valve B (18) can adjust the flow of clean water, and the pipeline connected to the high-pressure gas cylinder (1) and the organic transparent glass tube (5) is sequentially equipped with a throttle valve A (2) , pressure gauge A (3), flow meter A (4), the drain pipe (9) and the drain valve (8) are connected to the top of the organic transparent glass tube (5), and the bottom and top of the organic transparent glass tube (5) are connected to Pressure sensor A (10), pressure sensor B (11), pressure sensor C (12) and pressure sensor D (13) are installed on the symmetrical side of the wellbore. Camera A (14) and camera B (15) are respectively installed on organic transparent glass The center of the upper 1/2 place and the center of the lower 1/2 place of the pipe (5).