Haimo Technologies Group Corp.

Lanzhou Haimo Technologies Co., Ltd.

Other

Li, Hongdi

Jige Chen

Junjie Ye

Hongdi Li

Bo Hu

Guodong Wu

Hai Yu

Jie Chen

Jianhua Xie

Zhengang Wang

The invention relates to a device for online measurement of gas flowrate and liquid flowrate of a wet gas in a horizontal pipe, comprising the following parts: a horizontal Venturi tube, comprising a truncated cone-shaped inlet pipesection with section area reduced gradually, a cylindrical throat pipesection and a truncated cone-shaped outlet pipesection with section area increased gradually; and a gamma ray monitor, comprising a gamma ray emitter and a gamma ray detector arranged in a manner that gamma rays emitted by the gamma ray emitter can radially pass through the cross section of the throat pipesection to reach the gamma ray detector. The invention also relates to a method for online measurement of gas flowrate and liquid flowrate of a wet gas in a horizontal pipe by using above device.

Device and method for online measurement of gas flowrate and liquid flowrate of wet gas in horizontal pipe

A wet gas flow measuring method, wherein measuring total flow differential pressure value &#x394;P of wet gas in a pipeline by a differential pressure flow measuring device (), measuring section gas contents of the wet gas in the pipeline by at least two phase fraction meters respectively (), obtaining optimized section gas content value GVFopt by a flow calculating module based on the section gas contents respectively measured by the at least two phase fraction meters (); and calculating gas volume flow rate Qg and liquid volume flow rate Ql by the flow calculating module based on the total flow differential pressure value &#x394;P of the wet gas and the optimized section gas content value GVFopt (). As the section gas content of the wet gas in the pipeline is detected by the redundant phase fraction meters, the gas volume flow rate Qg and the liquid volume flow rate Ql can be measured accurately, which meets the requirements on production measurements of oil and gas field and facilitates management improvement and production optimization of oil-gas reservoir. A wet gas flow measuring apparatus is also provided.

Wet gas flow measuring method and apparatus

A flow metering method for an annular gas and liquid flow comprises the following steps of: first, enabling a gas and liquid mixed fluid to flow through a vertically arranged circular pipe so as to form the annular gas and liquid flow; and then measuring total flow or liquid average velocity or gas average velocity of the gas and liquid mixed fluid; measuring physical quantities, such as temperature, pressure, gas fraction and the like, of the gas and liquid mixed fluid; and finally, accurately figuring out liquid volume flow and gas volume flow according to analysis of a gas and liquid slip factor.

Method for accurately measuring gas flow and liquid flow in a gas and liquid mixed fluid

An extremely high water cut oil-gas-water three phase flow water removing device includes a mist eliminator (), a fluid stabilizer (), a liquid collection chamber (), a fluid directing duct (), an inlet connection pipe section (), a gas outlet connection pipe section (), a mixture liquid exit connection pipe section (), a free water outlet connection pipe section (). The function of the device is to effectively remove most of the free water from the high water cut oil-air-water three phase flow mixture liquid. An extremely high water cut oil-air-water three phase flow measurement apparatus and a measurement method using the water removing device are also disclosed.

Water removing device for extremely high water content three-phase flow, and measurement device and method for extremely high water content three-phase flow

The present invention relates to a positron tomography imaging apparatus for a multiphase flow in an oil pipeline, which apparatus utilizes positron and electron annihilation generating a pair of coincidence gamma-rays of 511 keV energy as tomography imaging means and provides an on-line tomography imaging function for metering a multiphase flow in an oil pipeline of an oil field. The apparatus comprises a plurality of sets of parallel high-precision gamma-ray detector arrays with a particular space structure arrangement, a positron radioactive source and a shield, and can acquire a phase fraction of such multiphase flow mixture as oil, gas and water under a condition of a single radioactive source by combining an image processing function. The design of a plurality of sets of high-precision detector arrays also greatly improves accuracy of a multiphase flow metering and its applicability in multiphase flows of different flow patterns. The video information of fluid generated by it will significantly enrich oil, gas metering information for petroleum industry and provide basic data for a more effective reservoir management and production optimization.

Growing community of inventors

Gansu, China

Jige Chen