Precise water injection method and precise water injection system for oil field low-injection well
A water injection system and precise technology, which can be used in earth-moving drilling, wellbore/well components, wellbore/well valve devices, etc., which can solve the problem that the accuracy and the lower limit of the flow range cannot meet the requirements and influence of accurate metering in low-injection areas. Problems such as accurate injection of low-injection wells to avoid false positives and false negatives
Pending Publication Date: 2021-04-16
胡克
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Problems solved by technology
This directly affects the precise injection of low-injection wells, and its accuracy and the lower limit of the flow range can no longer meet the requirements of accurate metering in low-injection areas
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Embodiment 1
[0033] Precise water injection method for water injection wells in oilfields; the incoming water from the single well water injection pipeline flows through the pump pressure transmitter 3, and is accurately measured by the spiral multifunctional flowmeter 4, and then flows through the temperature transmitter 6 and the oil pressure transmitter 7, Inject water into the oil layer in the well through the wellhead of the well; transmit the pump pressure, instantaneous flow, cumulative flow, temperature, oil pressure, and casing pressure instrument signals to the meter head of the spiral multifunctional flowmeter 4 through the signal line, and have 485 communication functions The head of the spiral multifunctional flowmeter 4 is transmitted to the eStar-3000 / 3500 data acquisition and transmission terminal 16, and the production parameters are transmitted to the production management platform of the oil production team in real time.
[0034] The power supply method of the precision w...
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The invention belongs to the technical field of oil field water injection, and discloses a precise water injection method and a precise water injection system for an oil field low-injection well. Incoming water from a single-well water injection pipeline flows through a pump pressure transmitter, is accurately metered by a spiral multifunctional flowmeter, then flows through a temperature transmitter and an oil pressure transmitter and is injected into an oil layer in the well through a wellhead of a well; and pump pressure, instantaneous flow, accumulated flow, temperature, oil pressure and casing pressure instrument signals are uploaded to a meter head of the spiral multifunctional flowmeter through signal lines and then are uploaded to an eStar-3000 / 3500 data acquisition and transmission terminal through the meter head of the spiral multifunctional flowmeter with a 485 communication function, and production parameters are transmitted to a production management platform of an oil production team in real time. The production days of the low-injection well in winter can be prolonged, and the phenomenon that the wellhead and pipelines of the low-injection well are freeze in a production process in winter is prevented; the purposes of less well closing, no well closing and more water injection are achieved; and the development effect of a low-injection area well layer is increased.
Description
technical field [0001] The invention belongs to the technical field of oil field water injection, and relates to a precise water injection method and a precise water injection system for low injection wells in an oil field. Background technique [0002] Low-injection wells refer to production wells with a daily injection capacity of less than 30 cubic meters. Due to the lack of accurate measurement and real-time monitoring of dynamic data in production management, such wells were forced to take measures to clear the line and close the well before winter to prevent the risk of freezing and cracking the wellhead and pipelines exposed on the ground. However, this anti-freezing well shutdown measure has seriously affected the development effect of the well layer in the low-injection area of the oilfield, and increased the periodic workload and production cost. [0003] At present, the oil field has entered the development period of ultra-high water cut, and has entered the er...
Claims
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Login to View More IPC IPC(8): E21B43/20E21B33/03E21B34/02G01D21/02
Inventor 胡克苍禹茜胡杨董科苏国锐李香凝张毓钊鲁一阳宋爽徐冰黎徐冰溪
Owner 胡克