Prescribe prescriptions for pulse diagnosis for shale oil and gas

The equipment is the basis of the experiment.
The laboratory has independently developed 8 sets of experimental equipment, and at the same time introduced and developed high-precision equipment such as nano-CT and focused ion beam, integrated and established a set of high-precision shale gas geology-development-engineering experimental technology.
Among them, shale reservoir micro-nano mineral composition, pore structure and physical property analysis instruments are the observation "artifacts", which can clearly detect and show the minerals of very fine particles that cannot be seen by conventional microscopes, and pores as small as a few nanometers.
Distribution and connectivity characteristics; the shale field gas content analyzer has the characteristics of batch processing and high automation, which effectively avoids the loss of gas caused by the core being left for too long.
The full-diameter shale gas adsorption, desorption and depletion development physical simulation device can maintain the original structure of the core sample and simulate the shale gas flow process under the real formation temperature and pressure under the high temperature and high pressure of 70 MPa and 150 degrees Celsius.

Manual "high-speed channels" dredge the "underground road network"

Compared with conventional natural gas resources, southern my country’s marine shale gas reservoirs are deeper, older and more remodeled, and the surface is more complex.
The development technology is a world-class problem.
In recent years, through unremitting efforts, the laboratory has developed horizontal well drilling and completion and staged fracturing technologies with independent intellectual property rights and a full technology chain.

"From a microscopic point of view, a shale gas reservoir is equivalent to a dark chamber, with many dead ends and narrow passages.
It is difficult for the gas blocked in it to find a way out.
" The researcher told reporters, "Hydraulic fracturing is undoubtedly the most direct An effective mining method is to create an artificial “high-speed channel” to form an underground intricate “road network”, which provides a long-term stable high-speed channel for shale gas production and flow.
” Facing the huge changes in shale gas geological conditions, experiments The chamber takes the formation of multi-scale complex fracture network as the core and maximizes the effective reconstruction volume as the goal.
It adopts the overall idea of ​​physical model + digital model, indoor + site, and launched a technology to greatly improve the effective reconstruction volume of shale multi-scale hydraulic fractures.
Tackling key research, innovative research and application in the identification and quantitative description of shale sweet spots, multi-cluster fracture equilibrium control, "well factory" parameter optimization, single well multi-scale fracture optimization, low-cost fracturing materials, and real-time rapid fracturing assessment, etc.
It has fully supported Sinopec's efficient development of shale gas.
Since 2016, relevant research results have guided the fracturing design and construction of 179 wells in the Fuling block, 3744 sections.
The process success rate is as high as 100%.
The cumulative increase of natural gas is 3.
763 billion cubic meters, which has achieved remarkable results in reducing costs and increasing efficiency; Deep and complex structural blocks such as Yongchuan, Dingshan-Dongxi, and Nanchuan have carried out field applications in multiple wells, and the process success rate has reached 100%.

Especially in the past two years, the laboratory has formed a new generation of shale gas high-efficiency fracturing technology with "multi-cluster dense cutting perforation + multi-stage temporary plugging + high-strength sanding" as the main body.
A number of advanced indicators have been achieved in the fracturing engineering of deep and infill adjustment wells, and a series of high-tech indicators for fracturing shale gas horizontal wells have been created, and the daily production of 310,000 cubic meters of deep shale gas wells with a vertical depth of more than 4,200 meters has been tested after compression.
Production records.