Industry news

Drilling fluid performance testing device

2022-06-06

The utility model relates to a deep-water drilling fluid testing device, which comprises an electrical control box, a constant temperature box/air source power temperature control box. The electrical control box comprises a stirring controller, a rheological performance testing controller, a fluid loss performance A test controller and a temperature controller; a stirring system, a rheological performance testing system, a fluid loss performance testing system and a temperature sensor are arranged in the thermostatic box; a cooler and a nitrogen bottle are arranged in the gas source power temperature control box. The device can simulate the low temperature conditions of deepwater seabed under laboratory conditions, evaluate the low temperature rheological properties and filtration performance of deepwater drilling fluids, and then study the influencing factors and mechanisms of the low temperature properties of deepwater drilling fluids. The development of drilling fluid provides a reasonable and effective evaluation method for drilling fluid performance.

 

Testing requirements:

 

1. a drilling fluid performance testing device, is characterized in that, described device comprises:

 

an electrical control box, which is provided with a stirring controller, a rheological property test controller, a fluid loss property test controller and a temperature controller;

 

an incubator, which is provided with a stirring system, a rheological performance testing system, a fluid loss performance testing system and a temperature sensor; and the stirring system is connected with a stirring controller; the rheological performance testing system is connected with the flow The variable performance testing controller is connected; the fluid loss performance testing system is connected with the fluid loss performance testing controller; the temperature sensor is connected with the temperature controller;

 

Air source power temperature control box, the air source power temperature control box is provided with a cooler and a nitrogen bottle; the cooler is respectively connected to the incubator and the temperature controller; the nitrogen bottle is connected to the filter loss Performance test controller.

 

2. The test device of claim 1, wherein the stirring system comprises one or more agitators.

 

3 . The testing device according to claim 2 , wherein the stirring system comprises one or more mixers with a speed regulation range of 3000-12000 r/min. 4 .

 

4. The testing device according to any one of claims 1-3, wherein the rheological property testing system comprises one or more viscometers.

 

5. testing device according to claim 4, is characterized in that, described rheological property testing system comprises that one or more viscosity measurement ranges are 0~300 mPa.s electric display six-speed rotational viscometer.

 

6. The test device according to any one of claims 1-3, wherein the fluid loss performance test system comprises one or more medium pressure water loss meters.

 

7 . The testing device according to claim 6 , wherein the medium pressure water loss meter is a medium pressure water loss meter with an effective filtration area of ??45.6 cm 2 .

 

8 . The testing device according to claim 6 , wherein the medium pressure water loss meter is a medium pressure water loss meter with a working pressure of 0.69 MPa. 9 .

 

9. The test device according to any one of claims 1-3, wherein the cooler is a cooler capable of controlling the temperature range of the incubator at 0°C to 25°C.

 

10 . The testing device according to claim 9 , wherein the temperature control accuracy of the cooler is ±0.1°C. 11 .

 

Technical field

 

The utility model relates to a kind of drilling fluid performance testing device, be specifically related to a kind of deep water drilling fluid performance evaluation device.

 

Background technique

 

[o002] China's deep water areas contain abundant oil and gas resources, which are in urgent need of development and utilization; and the backwardness of domestic deep water drilling fluid technology has become one of the main technical bottlenecks of deep water oil and gas resources. Different from land and shallow water areas, in deep water low temperature environment, The viscosity of the drilling fluid increases, the circulating pressure consumption increases, and the pressure of the liquid column increases, which makes the well control more difficult; it is easy to gel when standing still, which brings great difficulties to deepwater drilling. In order to provide reasonable low temperature performance of drilling fluid, a deepwater drilling fluid performance test device that can simulate the low temperature conditions of the seabed must be developed to meet the needs of use. In order to directly put the drilling fluid into the refrigerator for freezing and cooling, and then put the six-speed viscometer and the medium pressure water loss meter into the refrigerator to measure the drilling fluid, this method does not form an organic combination of various testing devices. In terms of use, It is difficult to operate, and it is impossible to complete the test of drilling fluid performance under closed and constant temperature conditions. Another method is to use FannIX 77 high temperature and high pressure rheometer to measure, the maximum working pressure of this equipment is 40 MPa, and the minimum working temperature is -10 ℃. The equipment can better simulate the low temperature and high pressure environment of the deep water seabed, and directly measure the rheological properties of drilling fluids. It has been widely used in the performance testing of drilling fluids at home and abroad. .

 

Chinese patent CN101532962 has reported a kind of drilling fluid low temperature performance testing method and device, and this device consists of high and low temperature experimental box, data acquisition system, the camera placed on the top of the experimental box body, the testing instrument located in the experimental box and two temperature sensors; the two temperature sensors are respectively used to detect the temperature of the working chamber in the experimental box and the temperature of the drilling fluid on the operating platform; the data acquisition system is placed outside the experimental box, and the It is connected with the camera and temperature sensor. The patent is to use a high and low temperature experimental box to create a constant or changing low temperature and low humidity environment in its studio, and then put the drilling fluid and testing instruments on the operating platform to cool down to the set value and then pass the temperature. The sensor and computer detect various properties of the drilling fluid, at the same time observe the scale of the test instrument through the camera, and transmit the image to the computer screen for display. In fact, the device only provides a low-temperature operating platform, and does not integrate the stirring system, rheology, etc. The performance test system, filtration performance test system and other test devices are planned and designed in a unified manner; during the experiment, each test device needs to be placed on the operating platform one by one, resulting in cumbersome operation and low efficiency; and the device adopts a top cover design, In the experiment, it needs to be turned on frequently, and the operation is difficult. "Chinese Literature" Deepwater Drilling Fluid Research and Evaluation Simulation Experimental Device" (2010-03 "Offshore Oil") describes a deepwater drilling fluid low temperature basic performance simulation experimental device. The experimental device In fact, the agitator, the six-speed rotational viscometer and the fluid loss meter are placed in the refrigerator, and the organic combination of each test device has not been formed. In terms of use, the operation is difficult, and the performance of the drilling fluid cannot be completed under the condition of closed and constant temperature. 's test.

 

Document " FannIX 77 automatic rheometer for evaluating drilling fluid rheological properties under deep water conditions " (2011, 01 "petroleum instrument" > mentioned a kind of can be used for evaluating drilling fluid under deep water conditions FannIX 77 automatic rheometer for rheological properties. The working temperature range is -10℃~316℃; the maximum working pressure is 300000 psi; the viscosity measurement range is 0~360 cp; The capillary-shaped condensate is uniformly sprayed into the gap between the test body and the heating jacket, and returns to the condensation device from the bottom of the heating jacket. The entire condensation process is carried out in a closed space to ensure that the temperature does not fluctuate with time or is small (±0.5℃) However, the cost of this device is relatively high, and the purchase cost is about 2 million to 2.5 million yuan; and the operation is complicated, and an experiment takes more than one day.

 

[o006] To sum up, a device that is easy to operate, easy to maintain, and easy to implement has not yet been formed in the performance test of deepwater low-temperature drilling fluids.

 

Utility model content

 

The purpose of this utility model is to provide a kind of deep water drilling fluid performance testing device, this device can simulate deep water subsea low temperature condition under laboratory conditions, carry out deep water drilling fluid low temperature rheological performance and fluid loss performance test, and then to deep water The research on the influencing factors and mechanism of the low temperature performance of drilling fluid provides a reasonable and effective method for testing the performance of drilling fluids for the development of oil and gas resources in deep water areas in my country. Moreover, the low temperature performance evaluation device for deep water drilling fluids of the present utility model has low manufacturing and operating costs And the operation is simple, and the low temperature performance test of drilling fluid can be carried out underwater 1000~10000 meters.

 

The utility model provides a kind of deep water drilling fluid performance testing device, and this device comprises:

 

[oo09] Electrical control box, the control box is provided with a stirring controller, a rheological performance test controller, a fluid loss performance test controller and a temperature controller.

 

Incubator, is also provided with stirring system, rheological property testing system, fluid loss performance testing system and temperature sensor in described incubating box; Described stirring system is connected with stirring controller; Described rheological property testing system and the rheological property testing controller is connected; the fluid loss property testing system is connected with the fluid loss property testing controller; the temperature sensor is connected with the temperature controller;

 

Air source power temperature control box, in described air source power temperature control box, be provided with cooler and nitrogen bottle; Described cooler is connected to thermostat and temperature controller respectively; Described nitrogen bottle is connected to fluid loss performance Test the controller.

 

[0012] The mixing system includes one or more mixers.

 

[0013] The stirring system preferably includes one or more mixers with a speed range of 3000~12000 r/min. [0014] The rheological property testing system includes one or more viscometers.

 

Described rheological property testing system comprises that one or more viscosity measurement ranges are 0~300 mPa·s six-speed rotational viscometer.

 

Described fluid loss performance testing system comprises medium pressure water loss meter.

 

[0017] The fluid loss performance testing system includes one or more medium pressure water loss meters. [0018] The medium pressure water loss meter is that effective fluid loss area is 45.6cm Medium pressure water loss meter. Described medium pressure water loss meter is that working pressure is the medium pressure water loss meter of 0.69MPa.

 

[OOO 20] The cooler is a cooler capable of controlling the temperature range of the incubator at 0°C to 25°C. The temperature control accuracy of the cooler is ±0.1°C.

 

Beneficial effect of the present utility model is:

 

Utilize the present utility model, can realize the simulation of subsea low temperature condition, evaluate deep water drilling fluid low temperature rheological performance and filtration loss performance, and then study the influencing factor and mechanism of deep water drilling fluid low temperature performance, for my country's deep water The development of regional oil and gas resources provides a reasonable and effective evaluation method for drilling fluid performance.

 

Description of drawings [0023]

 

Fig. 1: Deepwater drilling fluid performance testing device diagram of the present utility model

 

[0024]

 

Reference number:

 

Detailed ways

 

Below in conjunction with embodiment, the present utility model is described in detail, but the scope of the present utility model is not limited to following examples.

 

A kind of deep water drilling fluid performance testing device of the present invention, this device comprises:

 

Electrical control box 2, is provided with stirring controller 22, rheological property testing controller 21, fluid loss performance testing controller 23 and temperature controller 24.

 

Incubator 1, is also provided with stirring system 12, rheological property testing system 11, fluid loss performance testing system 13 and temperature sensor 14 in described incubating box, and described stirring system 12 is connected to rheological property testing system respectively 11 and the fluid loss performance testing system 13, the stirring system 12 is connected with the stirring controller 22; the rheological property testing system 11 is connected with the rheological property testing controller 21; the fluid loss performance testing system 13 is connected with the The filter loss performance test controller 23 is connected; the temperature sensor 14 is connected with the temperature controller 24;

 

[o031] Air source power temperature control box 3, is provided with cooler 32 and nitrogen bottle 31 in the gas source power temperature control box; Described cooler 32 is connected to incubator 1 and temperature controller 24 respectively; Described nitrogen The bottle 3l is connected to the fluid loss performance test controller 23.

 

[OUO 32] The stirring system 12 consists of two mixers with a speed regulation range of 4000-11000 r/min, a stirring volume of 500 ml, and a timing system to meet the needs of different stirring times. The rheological property testing system 11 is composed of a set of digital display six-speed viscometer, the viscosity measurement range is 0~300 mPa·s. The drilling fluid viscosity can be measured at different rotational speeds, and it is the main system for evaluating the low temperature rheological properties of the drilling fluid. The fluid loss performance test system 13 is composed of a gas source and a medium pressure water loss meter. The effective fluid loss area is 45.6 cma, and the working pressure 0.69MPa, the filtration pressure difference is provided by the gas source, and the filtration performance of the drilling fluid can be judged according to the size of the filtration loss. The cooler 32 can provide a constant low temperature environment for drilling fluid performance testing, the simulated temperature range is 0°C~25°C, the temperature control accuracy is ±0.1°C, and the external dimensions are 1000×500×700 mm. The control and data acquisition system includes the temperature setting and control of the incubator I, the speed control of the six-speed viscometer, and the speed control of the mixer. , easy to operate.[0033] the use method of the drilling fluid performance testing device described in the utility model:

 

1) rheological property test

 

1. Turn on the switch of temperature controller 24 at first, and the set temperature is 2 °C; the temperature in the thermostat 1 is measured by temperature sensor 14 and reaches the set value and is constant;

 

2 prepared drilling fluids are put into incubator 1 to cool 16h;

 

3 drilling fluid is put into stirring system 12, in stirring controller 22, set stirring time 20 min and speed 11000 m/s, start stirring, and continue to carry out temperature measurement to drilling fluid with temperature sensor 14;

 

4 put into the rheological property testing system 11 with the well-stirred drilling fluid, adjust the rotational speed in the rheological property controller 21 successively, measure the viscosity under different rotational speeds respectively;

 

[0039] 5 After the experiment is completed, close the box to end the experiment.

 

2) filter loss performance test

 

1. Turn on the switch of temperature controller 24 at first, and set the required temperature of the experiment to 2 ° C; measure the temperature in the incubator 1 through temperature sensor 14 and reach the set value and be constant;

 

2 prepared drilling fluids are put into incubator 1 to cool 16h;

 

3 drilling fluid is put into stirring system 12, in stirring controller 22, set stirring time 20 min and speed 11000 m/s, open switch and stir, and continue to carry out temperature measurement to drilling fluid with temperature sensor 14;

 

4 open the pressure valve in the adjustment fluid loss performance test system 23, set pressure is 0.69MPa;

 

5. The well-stirred drilling fluid is put into the filtration performance test system 13, and the drilling fluid filtration volume of 7.5min is measured;

 

[0 046] 6 After the experiment is completed, close the box to end the experiment.