Oil field liquid carbon dioxide injection device and injection method
A technology of liquid carbon dioxide and carbon dioxide, which is used in earth-moving drilling, production of fluids, wellbore/well components, etc., can solve the problems of construction personnel and gas injection equipment threats, safety valve take-off failure, low safety, etc. The effect of normal startup, improving work efficiency and simplifying the operation process
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[0034] Embodiments of the present invention provide an oilfield liquid carbon dioxide injection device and injection method, which realize multiple chain protections of carbon dioxide injection, stable and reliable operation, and high safety performance.
[0035] On the one hand, in order to achieve the above object, the embodiment of the present invention provides an oil field liquid carbon dioxide injection device, which is connected with the Christmas tree and used to inject liquid carbon dioxide into the oil well for oil recovery, such as figure 1 As shown, the injection device includes:
[0036] CO for supplying liquid carbon dioxide 2 tanker 1, the CO 2 The tank car 1 has a canned pump 4;
[0037] A liquid inlet pipeline 5, one end of the liquid inlet pipeline 5 is provided with a joint assembly, and the joint assembly 3 is connected to the liquid supply end of the canned pump 4 to form a liquid supply pipeline;
[0038] A carbon dioxide plunger pump 10, the inlet of th...
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