According to the tube structure of gas test, the software can realize the calculation of oil
and gas well tube flow, calculate the production under different oil nozzles, the pressure
and temperature distribution in wellbore, the condition of hydride formation, the minimum
production of bringing out wellbore liquid, the calculation of high pressure physical
property parameters, and the analysis of conventional and dynamic production capacity based
on pressure test well. These complete capacity evaluation and prediction functions can
determine the reasonable capacity formulation scheme under different development modes (new
well opening, stage continuous gas production well, self-jet well and long-term production
well, etc.). Among them, the transient IPR curve theory, which realizes the production
capacity prediction method based on the well test interpretation, can change the traditional
capacity test of changing the working system many times to the test that shut-in pressure
recovery only one time needed.
Provide wellhead-bottom hole pressure conversion function: it can
realize wellhead to bottom hole pressure conversion under the condition of variable
production system and variable production according to different wellbore flow conditions;
at the same time, it provides wellbore pressure distribution calculation and phase diagram
calculation function at each time.
Provides the function of calculating the physical properties of
high pressure of oil and gas water: the calculation of the physical properties parameters of
high pressure of fluid domestic and abroad can be summarized, and the oil/gas/water
viscosities, compression coefficient, volume coefficient and density of oil and gas water
can be calculated; gas provides a variety of non-hydrocarbon gas correction methods; oil
phase provides saturation and unsaturated physical properties calculation; two phase
provides tension calculation, etc.
Provide system design function: according to the gas test to
produce the tube structure, realize the oil and gas well tube flow calculation, calculate
the production under different nozzles, the pressure distribution in the wellbore, the
condition of hydride generation, the minimum output from the wellbore liquid, predict the
dynamic production capacity, provide the integrated production system optimization from
underground-throttle valve-surface.
Provide capacity evaluation functions, including calculation of
pressure, development dynamics, transient capacity, capacity well testing and flow analysis
functions. has a steady-state capacity evaluation method, which can carry out conventional
capacity analysis and capacity prediction based on well test interpretation; with transient
IPR curve calculation function at different production times, capacity prediction can be
achieved by production data analysis of variable pressure-flow.
图1 高压物性参数计算
图2 压力折算功能
