Chengong production data analysis software V3.0 is an important tool to obtain oil and gas reservoir or oil and gas well parameters through oil and gas well production dynamic analysis, processing and interpretation of oil and gas well daily dynamic data response. The specific analysis process is to measure wellhead pressure (or bottom hole pressure) and surface production data. By analyzing the changing trend of pressure and production data, the purpose of inversion of underground parameters, prediction of future production capacity and understanding of formation dynamics is achieved, which provides scientific guarantee for the scientific formulation of oil and gas development system.

The software is easy to operate and provides more than 90,000 kinds of oil and gas well analysis models, which is suitable for the development of conventional oil and gas, dense oil and gas, shale gas, coal bed methane and geothermal resources, and meets the interpretation needs of exploration and development of various oil and gas reservoirs domestic and abroad.

The software has been upgraded and optimized on the basis of Chen Gong production data software V1.0, using new Ribbon interface design, has friendly interface and easy to operate.

Basic functions

Data processing: including fluid type selection, basic parameter input, pressure and flow data input over time, data processing and model diagnosis and other functions.

Traditional simulation: provides traditional Arps、Fetkovich、Blasingame、A-G、NPI and Transmit analysis methods for vertical oil-gas wells where flow has reached the boundary.

Combination simulation: provides the material equilibrium time method and the coordinate combination method based on the accumulation time, including the double logarithmic curve plate simulation method and the Blasingame curve plate simulation method, basically covers the production model which already has the analytical solution, applies to all oil and gas wells example.

Capacity prediction: according to the formation parameters obtained from the simulation analysis, the following production conditions (such as constant pressure production) are set, and the trends of future pressure and capacity are predicted, while the auxiliary functions such as transient capacity, capacity evaluation and pressure design are provided.

Visual display: Based on the parameters of production data analysis or well test analysis, the formation pressure distribution at different times under variable production capacity can be calculated and animated with two-dimensional or three-dimensional graphics, which can more intuitively describe the formation flow.

Characteristic functions

According to the special properties of unconventional oil and gas reservoirs such as shale gas and the development characteristics of deep resources in China, the software puts forward a new method of production data analysis, and gives a method of plate simulation based on accumulated production, which can realize the production data analysis under the condition of variable flow and pressure of oil and gas wells; for the case of frequent shut-in and open wells, it provides the function of selecting shut-in point, which greatly improves the interpretation accuracy; for the case of data analysis during the fracturing liquid flowback drainage process, a shale gas and water two-phase flow model is proposed. In the future production and pressure prediction function, various of variable system prediction methods suitable for shale gas production are provided.

Abundant simulation methods: initiating mouse drag simulation and the automatic simulation method based on big data, simple to operate, fast and accurate, meanwhile also provides a common manual simulation and nonlinear regression simulation method.

First time proposed the simulation method which the transverse coordinate is the cumulative time, which solves the problem that the transverse coordinate of the material equilibrium time is not monotonous, and effectively improves the simulation quality of the plate when the measured data is too chaotic.

Data mutation point function: in view of the drastic data fluctuation caused by frequent shut-in and open wells and changing working system, the virtual equivalent time correction theory is first time created, and the function of selecting mutation points is provided, which greatly improves the quality of curve and historical simulation, and gives more realistic production capacity prediction results.

Calculation of the proportion of adsorbed gas: real-time calculation function of the proportion of adsorbed gas in shale gas production is first time created, to assist in judging the production stage of shale gas well, and to help the rational planning of subsequent production.

Shale gas and water two-phase flow model: in view of the shale gas flowback drainage stage and the large amount of liquid production in the early stage of production, the first two-phase flow analysis model of shale gas and water can be put forward to calculate the change of water saturation near the wellbore and scientifically plan the shale gas flowback drainage and production system.

Various production capacity forecasting methods: including constant pressure forecasting, constant flow forecasting, constant production first then constant pressure forecasting, constant pressure first then constant production forecasting, pressure trend line forecasting methods, etc., which are more close to the field production practice, the prediction results are more accurate, and provide theoretical basis for subsequent production.