Method used for gas drilling drillstem test
A technology for gas drilling and ground testing, used in surveying, earth-moving drilling, wellbore/well components, etc., can solve the problem of inconvenient installation and fixation of flowmeters, low safety and operability, and prolonged non-drilling time and other problems, to achieve the effect of saving non-drilling time, high safety and reducing drilling costs
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[0025] Example 1
[0026] Refer to the manual attached figure 1 and 2 , The present invention discloses a method for gas drilling midway test: first, connect the inner blowout prevention pipeline 1, the choke manifold 2, the ground testing device 3 and the outer blowout pipeline 4 in sequence; The test device 3 includes a manifold 9 connected in series with the gas drilling and blowing line 4, as well as a first flat valve 6, a second flat valve 7, a third flat valve 8 and a measuring unit 5, wherein the first flat plate The valve 6 is installed on the gas well drilling external blow-off line 4, the second flat valve 7 and the third flat valve 8 are installed on the manifold 9, the measuring unit 5 is installed on the manifold 9, and the measuring unit It is located between the second flat valve 7 and the third flat valve 8; secondly, during the midway test, first open the third flat valve 8, then open the second flat valve 7, and finally close the first flat valve 6. The f...
Example Embodiment
[0027] Example 2
[0028] Refer to the manual attached figure 1 , 2 and 3, as a preferred embodiment of the present invention, the present invention discloses a method for midway testing of gas drilling: first, the internal blowout prevention pipeline 1, the choke manifold 2, the ground testing device 3 and the external blowout The pipelines 4 are connected in sequence; wherein, the ground testing device 3 adopted includes a manifold 9 connected in series with the gas drilling and blowing pipeline 4, as well as a first flat valve 6, a second flat valve 7, a third flat valve 8 and a Measuring unit 5, wherein, the first flat valve 6 is installed on the gas well drilling external release line 4, the second flat valve 7 and the third flat valve 8 are installed on the manifold 9, and the measuring unit 5 is installed on the On the manifold 9, and the measuring unit is located between the second flat valve 7 and the third flat valve 8; secondly, when performing the midway test, fi...
Example Embodiment
[0029] Example 3
[0030] A specific example of the present invention is as follows:
[0031] The new process method of the present invention is realized by a new supporting test device and control process. The entire ground test device 3 is a skid-mounted body composed of a manifold 9, a flat valve and a measurement unit 5 (such as figure 2 shown), connected with the gas drilling external blow-off pipeline 4.
[0032] The measurement unit 5 is the core part of the whole supporting device, and is mainly used to accurately measure the production capacity data (including the flow rate, pressure and temperature of the produced gas).
[0033] The use method of the supporting device involved in the new method is: when the midway test is not performed, the second flat valve 7 and the third flat valve 8 are normally closed, and the first flat valve 6 is normally open; the operation method of the midway test is to first open the third flat valve. Flat valve 8, then open the second ...
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