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(PDF) Sandstone matrix acidizing knowledge and future ...

The paper critically reviews the sandstone acidizing mechanism with different acids, problems occurred during the application of different acids and explores the reasons when matrix stimulation is ...

PETROLEUM GEOLOGY: AN INTRODUCTION

2004-11-29 · PETROLEUM GEOLOGY: AN INTRODUCTION Ronald F. Broadhead, New Mexico Bureau of Geology and Mineral Resources, a Division of New Mexico Institute of Mining and Technology INTRODUCTION The oil and natural gas that are produced from oil and gas fields reside in porous

Identification the distinctions of immiscible CO2 huff and ...

2021-10-29 · CO 2 huff and puff (HNP) is one of the most effective methods to improve tight oil recovery after the primary depletion process. The seepage mechanisms between CO 2 and crude oil are complicated in porous media during CO 2 HNP process. Therefore, in this paper, the CO 2 HNP process of Chang-7 tight oil reservoir, Ordos Basin, China, was studied by nuclear magnetic resonance (NMR) …

Aqueous phase trapping damage in the production of …

2020-3-1 · Tight sandstone gas reservoirs in the early development generally have sub-irreducible initial water saturation (Bennion et al., 1996, 2000), which means that the tight sandstone reservoir has the potential to cause serious APT damage in production, such as medium or intense damage.

Dynamic Variation of Water Saturation and Its Effect on ...

2021-2-18 · tight sandstone gas well production.28 Especially, in the partly water-saturated tight sandstone gas reservoirs, the water saturation near a wellbore will continuously increase since ... gas well production, the driving mechanism of water drainage from …

Sedimentary Rocks | National Geographic Society

Sandstone is formed from layers of sandy sediment that is compacted and lithified. Chemical sedimentary rocks can be found in many places, from the ocean to deserts to caves. For instance, most limestone forms at the bottom of the ocean from the …

Study on the change of physical properties of sandstone ...

2021-9-17 · This study investigated the changes in the physical parameters of sandstone (solution pH, mass, P-wave velocity, and porosity) and mechanical strength (tensile strength) under acidic drying-wetting cycles. Additionally, the particle flow code (PFC) was used to simulate the drying-wetting cycles. The results reveal that the pH range of the acidic solution is much larger than that of the neutral ...

Energy Exploration & Exploitation Experimental study on ...

2021-6-17 · The tight sandstone oil reservoirs characterized by the low porosity and permeability must be hydraulically fractured to obtain the commercial production. Nevertheless, the post-fracturing production of tight oil reservoirs is not always satisfactory. The influence mechanism of various

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2019-9-16 · plugging mechanism and application of calcite particles in fractured formations[J] Journal of Petroleum Exploration and Production Technology,2021. [2]Jiaxue Li,Qinghui Li,Jinzhi Zhu,et al:Ultra-High Density Oil-Based Drilling Fluids Laboratory ...

The formation mechanism and exploration significance of ...

The formation mechanism and exploration significance of ultra-deep, low-porosity and tight sandstone reservoirs in Kuqa depression, Tarim Basin ResearchGate 0 : 66 : R Zhang,H Yang,J Wang,J Shou,Q Liu ...

In-situ Particle Migration and Plugging Mechanism in ...

2017-11-20 · The influence of particle migration on production decline in wells is well known [].Studies have been conducted on the mechanism for generation of mobile rock particles [] and the mechanism for formation damage resulting from migration and deposition of particles [] has been found theoretically and experimentally that the in-situ fluid velocity, the entrainment capacity of the flow, the ...

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2016-9-19 · [3]Experimental Investigation on Mechanical Properties and Failure Mode of Natural Fractured Sandstone[C]//SPE Argentina Exploration and Production of Unconventional Resources Symposium. Society of Petroleum Engineers, 2018.

A review of experimental studies on sand screen selection ...

2020-1-2 · Sand production is a problem that affects hydrocarbon production from unconsolidated sandstone reservoirs. Several factors, such as the strength of the reservoir, its lithification and cementation and reduction in pore pressure, may cause …

Controlling factors towards co-production performance of ...

2021-11-5 · However, the occurrence state and production mechanism of CBM are obviously different from that of tight sandstone gas. For the co-production of CBM and tight sandstone gas, it is necessary to comprehensively consider the influence of interlayer interference, wellbore backflow, and interference effect between artificial fractures.

Sand Production Mechanism and Changes of Rock …

2016-1-8 · The mechanism of rock failure includes mechanical failure and chemical failure. The chapter examines appraisal experiments of sand production on changing formation properties that combine the case of unconsolidated sandstone reservoirs in Bohai Bay. It reviews the mechanism of sand production from the standpoint of experiments.

Chapter 8 PETROLEUM

1998-6-25 · Consumption Production FIGURE 8-3. U.S. petroleum production and consumption in the last 45 years. [Source: Energy Information Administration.] The impervious rock covering the reservoir rocks is called a cap rock. As shown in Figure 8-4, oil traps consist of hydrocarbon fluids held in porous rock covered by a cap rock.

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2000-6-23 · Evolution of Temporal-spatial Pattern of Grain Production and Its Driving Mechanism in Huaihe River Basin During 1990-2012. Bulletin of Soil and Water Conservation, 2016, 36(3): 179-185. (in Chinese) 139. Qiao Luyun, Liu Yansui. The Logical Framework of

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2016-12-1 · Formation mechanism of the Upper Triassic Yanchang Formation tight sandstone reservoir in Ordos Basin—Take Chang 6 reservoir in Jiyuan oil field as an example[J]. Journal of Petroleum Science and Engineering,Volume 178, July 2019, Pages 497-505.

Hydrogeochemical characteristics of the sandstone-hosted ...

2020-11-1 · Abstract The northern Ordos Basin is one of the biggest uranium resource production areas in China. However, the hydrogeochemical mechanism for the formation of uranium deposits remains poorly understood, despite that interlayer oxidation ...

(PDF) Formation damage mechanism of a sandstone …

Formation damage mechanism of a sandstone reservoir based on micro-computed tomography Zhiyu W ang 1, 2, Hongxi Li 3, Xuemei Lan 4, Ke W ang 1, 2, Y ongfei Y ang 1, 2 ∗, V adim Lisitsa 5

Sand production: A smart control framework for risk ...

2020-3-1 · Sand production from unconsolidated formation reservoir is a very challenging issue as it ends the production life of a reservoir and well. In the oil and gas industry, millions of dollars are spent yearly for the cleaning of sand. Sand production also restricts the production flow rate, hence causing huge economical loss.

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2018-10-9 · Development of degradable pre-formed particle gel (DPPG) as temporary plugging agent for petroleum drilling and production. Petroleum Science, SCI/EI. 5. Sun, X., Bai, B., Alhuraishawy, A., Zhu, D., 2020. Understanding the Plugging Performance of HPAM-Cr (III) Polymer Gel For CO2 Conformance Control. SPE Journal, SCI/EI.

Water coning mechanism in Tarim fractured sandstone …

2014-12-31 · water production increases the operating costs, and reduces the efficiency of the depletion mechanism and the overall recovery [1−4]. Among these mechanisms, water coning is a serious problem in many gas fields especially in some large Tarim fractured

Multi-parameter logging evaluation of tight sandstone ...

2021-2-7 · Acoustic, resistivity and nuclear magnetic resonance (NMR) logging are important means of reservoir evaluation. In this paper, the information of pore structure, such as the aspect ratio and the shape, is obtained by rock physical experiments like constant velocity mercury injection and casting thin section. Taking pore structure information as a link, the theoretical relations among acoustic ...

How Are Sedimentary Rocks Formed?

2020-8-20 · Sandstone is the most well known example of this process, as it is rock formed from the compression of sand. Chemical Rocks Limestone in a quarry. Image credit: Parmna/Shutterstock . Chemical rocks are formed from the accumulation of certain chemicals – usually calcium – in a given place over time. One of the prime examples of this is ...

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2016-9-20 · [10]A study of gas transport and production characteristics with non-Darcy flow in tight gas reservoirs, International Journal of Oil Gas and Coal Technology, 2017.(SCI/EI) [11]Investigation on formation and distribution of remaining oil and sensitivity analysis in fracture-vuggy media, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2016.(SCI/EI)

(PDF) Formation mechanism of authigenic chlorite in tight ...

Formation mechanism of authigenic chlorite in tight sandstone and its influence on tight oil adsorption, Triassic Ordos Basin, China August 2020 Energy Exploration & Exploitation 38(2):014459872094714

Journal of Petroleum Science and Engineering | Vol 208 ...

Fracture mechanism of tight sandstone under high and complex 3-D stress compression: Insights from acoustic emission. Jie Huang, Zhiwei Liao, Qianting Hu, Zhenlong Song, Xiaodong Wang ... select article Experimental research on inter-fracture asynchronous injection-production cycle for a horizontal well in a tight oil reservoir. https://doi ...