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541
Research progress on isotopic fractionation in the process of shale gas/coalbed methane migration
Published 2022-10-01“…Furthermore, it has shown promising application potential in production status identification and decline trend prediction of gas well. Future research should focus on: (1) the co-evolution of carbon and hydrogen isotopes of different components during natural gas migration, (2) the characterization of isotopic fractionation during the whole process of gas generation-expulsion-migration-accumulation-dispersion, and (3) quantitative characterization of isotopic fractionation during natural gas migration in complex pore-fracture systems and its application.…”
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542
Isotopic geochemical characteristics and identification indexes of shale gas hydraulic fracturing flowback/produced water
Published 2022-02-01“…As a result, 87Sr/86Sr values measured in the Silurian strata in southern Sichuan Basin are high, which makes 87Sr/86Sr values become an effective index to distinguish shale gas fracturing FP water from conventional gas well produced water and shallow groundwater in Sichuan Basin.…”
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543
Prediction of marine shale gas production in South China based on drilling workload analysis
Published 2016-12-01“…On this basis, the development features of foreign and domestic shale gas wells were studied and the drilling workload analytical method for the prediction of shale gas production was established: (1) the initial production of a single well can be used to characterize the productivity of the shale gas well, and its test production is approximate to its initial production. …”
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544
Experimental evaluation of different influencing parameters on cutting transport performance (CTP) in deviated wells
Published 2023-02-01“…Globally, fuel energy has become a crucial issue in fulfilling energy demand; new oil/gas wells should be drilled safely and efficiently to achieve the well target. …”
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545
A Method for Evaluating Coalbed Methane Reservoir Productivity Considering Drilling Fluid Damage
Published 2024-04-01“…Compared with a conventional gas reservoir or shale gas reservoir, the working fluid loss during CBM development will seriously affect the subsequent production project and even make the gas well lose production capacity. On the other hand, in order to avoid this phenomenon, measures such as acidification or volumetric fracturing are sometimes used to improve the seepage environment near the well and near the fracture. …”
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546
New understandings of the seismic modes of high productivity wells in the Sinian Dengying Fm gas reservoirs in the Gaoshiti area, Sichuan Basin
Published 2018-10-01“…Then, the types of reservoir assemblages were determined based on gas well logging and test data, and the seismic response characteristics of typical wells with different types of reservoir assemblages and the seismic modes of high productivity wells were studied by using high-resolution seismic data. …”
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547
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548
Damage of Green Synthetic Cement Slurry to Clastic Rock Reservoir
Published 2023-01-01“…As the most critical part of oil and gas well construction, the cementing process mainly pays attention to the safe pumping of the cement slurry and the long-term effective interlayer isolation capability of the cement sheath. …”
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549
Shale gas exploration and development in the Sichuan Basin: Progress, challenge and countermeasures
Published 2022-04-01“…On the one hand, continue to apply the geology and engineering integration technology to carry out “integrated research, integrated design, integrated implementation and integrated iteration” in the whole life cycle of shale gas well; and on the other hand, carry out problem-oriented continuous researches from the aspects of geological evaluation, development policy, engineering technology and industry regulation, so as to improve geological evaluation theory and technology, innovate gas reservoir engineering theory and method, research and develop engineering technology for cost reduction and efficiency improvement, improve shale gas industry regulation, and form a new pattern of collaborative promotion of technical and non-technical elements. …”
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550
Mechanisms and prevention & control countermeasures of water breakthrough in horizontal wells in multi-layer unconsolidated sandstone gas reservoirs: A case study of the Tainan Gas...
Published 2019-12-01“…In conclusion, the edge water encroachment can be delayed and the water-free gas production period of gas well can be extended by increasing the length of horizontal section and controlling the production pressure difference. …”
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551
Study into impacts of formation sands on foam performance during drainage gas production—Take Qinghai Oilfield’s Sebei Gasfield for example
Published 2023-05-01“…Foam drainage gas production is a gas production technology for low-pressure gas well in domestic and abroad industries. In Qinghai Oilfield’s Sebei Gasfield, sand existence often occurs during drainage production. …”
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552
Helium distribution of Dongsheng gas field in Ordos Basin and discovery of a super large helium-rich gas field
Published 2022-01-01“…The variation of helium content with gas well production performance in short and medium term of key natural gas wells in the Dongsheng gas field showed that the helium contents in natural gases are stable in a relatively long term. …”
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553
Hydraulic fracturing effect of CBM vertical well and its impact on productivity: a case study of Yaojie Mining Area
Published 2023-06-01“…CBM reservoir is a typical fracture-controlled gas reservoir, and the scale of fracturing and fracture-filling effect have decisive control on gas well productivity. In order to reveal the influence mechanism of the hydraulic fracturing effect of CBM vertical wells on the productivity effect of gas wells, taking the Haishiwan Mining Area of Yaojie, Gansu as an example, this paper focuses on reporting the fracturing effect of coal reservoirs under the form of vertical well development and its understanding of the constraints on productivity. the result shows: ① The fracture pressure of CBM well mainly feeds back the characteristics of the wellbore cement sheath rather than the mechanical properties of the coal reservoir. …”
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554
Natural gas development prospect in Changqing gas province of the Ordos Basin
Published 2022-04-01“…And twenty-six development technological countermeasures are put forward correspondingly, such as well pattern thickening, extension and reserve increase, secondary production layer potential tapping and fine gas well management. Third, the development direction and goal of natural gas development in Changqing gas province is to pay equal attention to the stable production of old gas fields and the production increase of new areas and carry out conventional gas and unconventional gas research simultaneously. …”
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555
Xenon isotope systematics, giant impacts, and mantle degassing on the early Earth
Published 2006“…A single event that degassed both the MORB and gas well reservoirs at the time of the moon-forming collision would be compatible with their distinct 129Xerad/136Xe244 ratios only if the post-impact iodine abundance in the MORB reservoir was about an order of magnitude lower than current estimates. …”
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556
EFFECT OF THE PSEUDOTIME FUNCTION ON GAS RESERVOIR DRAINAGE AREA DETERMINATION Efecto de la función de pseudotiempo en la determinación del área de drene de un yaciemiento de gas...
Published 2007-12-01“…In this paper, we implemented the Tiab’s Direct Synthesis (TDS) technique, to include pseudotime effects, and observe its influence on the interpretation results of gas well test data at early and late time periods. …”
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557
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558
Ten years of gas shale fracturing in China: Review and prospect
Published 2022-04-01“…The first fractured shale gas well of China was constructed in 2010. After 10 years of development, China has become the second country that possesses the core technology of shale gas development around the world, realized the shale gas fracturing techniques from zero to one and from lagging to partially leading, and constructed the fracturing theory and technology system suitable for middle–shallow marine shale gas exploitation. …”
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559
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560
Synthesized Transmitting Coil for Magnetic Focusing of Pulsed Eddy Current for Downhole Casing Inspection
Published 2022-07-01Get full text
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