My gas logging technology fills the gap in China

The analysis cycle was reduced from 30 seconds to less than 10 seconds

As of November 29, the GW-IRGA infrared spectroscopy logging gas analyzer independently developed by PetroChina Logging Technology R&D Center has successfully applied more than 40 key wells
in China.
"This technology has achieved fast analysis cycle and multiple components of logging gas detection technology, marking a major breakthrough in the core technology of gas logging and logging technology, which is the first in China
.
" The relevant person in charge of Great Wall Drilling Logging Company said
.

Experts carried out small-layer analysis of oil wells in Sichuan and guided on-site adjustment of trajectory direction

It is understood that spectral oil and gas detection technology is a cutting-edge confidential technology at home and abroad, and without mature experience and technology for reference, researchers can only cross the river
from scratch.
After the establishment of this technical project in 2018, the project team carried out research on five aspects
: multi-spectral joint baseline correction method, spectral qualitative and quantitative analysis interval selection, and identification and correction of abnormal spectral information in view of the technical difficulties of C1-C5 in infrared spectrum 。 After field tests, repeated verification and optimization of dozens of wells, the GW-IRGA infrared spectroscopy logging gas analyzer was developed, which can shorten the analysis cycle of C1-C5 from 30 seconds to less than 10 seconds, and can simultaneously detect CO and CO₂ non-hydrocarbon components, refreshing the speed of real-time and effective analysis of reservoir fluid properties in the domestic process of
drilling process.

According to the technical personnel of the logging technology R&D center, after the successful development of the first-generation GW-IRGA infrared spectroscopy logging gas analyzer, in order to better solve the problem of oil-water interface identification and fine division of flooded layer in the exploration of "low, deep, non-and old" oil and gas fields, the R&D center continued to increase the pace of research and development, and completed the key technological breakthrough
of using infrared spectroscopy to detect C1-C8 main n-alkanes, isoparaffins, naphthenes and aromatic hydrocarbons in formation fluids by drilling while drilling 。 The high-speed continuous detection of 15 hydrocarbon component information and the newly developed intelligent real-time oil and gas interpretation software with a 15-second cycle provides a strong guarantee
for the exploration and development of oil and gas fields in China to improve quality and efficiency, and increase reserves and production.

After the successful development of the second-generation GW-IRGA infrared spectroscopy logging gas analyzer, it has truly achieved the double improvement of detection speed and detection types, and the technical indicators are far ahead of similar products in the industry, changing the pattern of foreign technological development
。 In the application of key wells in Liaohe Oilfield and Changqing Oilfield, this technology gives full play to the advantages of fast analysis speed, high data density and complete detection components, which greatly meets the technical requirements of the discovery of thin-layer and fracture-type oil and gas reservoirs, the identification of oil-water interfaces in complex oil and gas reservoirs, and the division of flooded layers in exploration old areas under rapid drilling conditions, and the oil and gas display discovery rate is 100%, realizing the leap of "quantity" of independent innovation application scale and the improvement of "quality" of speed and efficiency
.

The technicians of the logging geological testing center carefully observe the samples

In order to adapt to the well-plant operation mode that is gradually emerging in the development of unconventional energy, the logging technology research and development center relies on the application of infrared spectrum logging gas analyzer without the need for auxiliary equipment such as hydrogen generator and air compressor, integrates DTU module combined with wireless communication Internet of Things technology, and develops a full-function wellhead gas detection and sensing parameter integrated acquisition device, a near-wellhead unmanned logging instrument
。 The working status of the infrared spectrum analyzer, sensor, degasser, automatic sand fishing machine and other working conditions of the well site can be remotely monitored and remotely controlled through computers, mobile phones and other terminals, so as to realize the data acquisition device near the wellhead, and the data storage and monitoring are far away, which changes the remote logging operation mode
.

The logging geological testing center develops geological laboratory technicians to conduct physical property experiments

Innovation drives development, technology leads the future
.
In the next step, Great Wall Drilling and Logging Company will take the construction of the logging industry technology source as the starting point, tackle key logging oil and gas testing equipment while drilling, provide technical support for the discovery of oil and gas, early warning of high-pressure layers, timely adjustment of horizontal trajectories, etc.
, extend the "eyes of geologists" from ground analysis to downhole detection, help oil and gas exploration, increase reserves and development, efficient drilling, and contribute more logging forces
to the construction of a scientific and technological power and an energy power.