Experimental Study of Oilfield Water Plugging with Organic Chromium Gel

Tong, Le; Fan, Rong; Yang, Shuangchun; Zhang, Qiushi; Pan, Yi

doi:10.1007/s10553-022-01336-0

Cited by 10 publications

(2 citation statements)

References 5 publications

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“…Therefore, the problem of water plugging in horizontal gas wells is extremely urgent. The current horizontal well water plugging technology mainly focuses on oil well horizontal wells [7][8][9] , while the exploration of gas well horizontal wells is seriously insufficient, and there are few domestic documents mentioning relevant cases and countermeasures [10][11][12][13][14][15] . Through analyzing the fluid accumulation situation in the wellbore of horizontal gas well X, the wellbore condition of the horizontal gas well that can be drilled with bridge plug staged fracturing is fully evaluated.…”

Section: Introductionmentioning

confidence: 99%

Exploratory Test of Horizontal Drilling Plugs and Water Shutoff Technology in X Horizontal Gas Well

Wang,

Zhang,

2023

J. Phys.: Conf. Ser.

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In order to solve the problem that the tight gas X horizontal gas well could not be put into production due to the accumulation of fluid in the wellbore during the drainage stage after fracturation, based on the geological understanding of water flowing from the far end of the reservoir, and the actual situation of staged fractured with drillable bridge plug, water blocking has become the exploration direction of potential excavation and resuming production. Through the analysis of the type, structure, setting principle and unsealing principle of drillable bridge plug, put forward the technical idea of horizontal drilling plugs and mechanical water plugging. And determine the treatment method of drilling-grinding and fishing large inner diameter bridge plugs, and design the construction process. Moreover combined with theoretical calculation, the relationship between the debris carrying velocity and displacement in horizontal wells, the size of the debris and the angle of inclination was optimized. Besides that, the milling method that uses a wellhead rotating device to drive the drill pipe and grinding shoes for drilling and grinding was proposed. In the field test, successfully drill to the third large inner diameter bridge plug position according to the design requirements. And successfully put in the fishable bridge plug to achieve mechanical water blocking. After commissioning, the daily gas production volume reached 11000 m3/d. The test results show that: 1) It is feasible to use the wellhead rotating drive drill pipe and grinding shoes to drill and remove the steel drillable bridge plugs in the horizontal section of the horizontal well; 2) It is also feasible to use the fishable bridge to plug in the horizontal section of the horizontal gas well with drillable bridge plug staged fractured, and the plugging effect is good. In summary, it is shown that this technology test achieves the purpose of potential excavation and resuming production of the X horizontal gas well, which has good reference value.

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Section: Introductionmentioning

confidence: 99%

Exploratory Test of Horizontal Drilling Plugs and Water Shutoff Technology in X Horizontal Gas Well

Wang,

Zhang,

2023

J. Phys.: Conf. Ser.

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“…Through research, it has been found that gel polymers are generally used as water plugging agents, plugging malignant leakage, and so on. For example, Tong et al [19] conducted experimental studies on organochromium gels as water blocking agents, and Yang et al [20] developed and comprehensively evaluated a polyampholyte (P(MPTC) based on sulfonated and quaternary ammonium functional groups) -co-Nass)) injectable self-healing hydrogels to prevent severe fluid loss into the formation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Plugging Performance of Poly (MMA-BA-ST) as a Plugging Agent in Oil-Based Drilling Fluid

et al. 2022

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Nanopolymer was developed in order to solve the problem that the micron-scale plugging agent cannot effectively plug nanopores, which leads to instability of the wellbore. The oil-based nano plugging agent poly (MMA-BA-ST) was synthesized by Michael addition reaction using styrene, methyl methacrylate and butyl acrylate compounds as raw materials. Poly (MMA-BA-ST) has a particle size distribution of 43.98–248.80 nm, with an average particle size of 108.70 nm, and can resist high temperatures of up to 364 °C. Poly (MMA-BA-ST) has little effect on the rheological performance parameters of drilling fluids, no significant change in the emulsion breaking voltage, significant improvement in the yield point of drilling fluids and good stability of drilling fluids. The mud cake experiment, and artificial rock properties of poly (MMA-BA-ST), showed that the best-plugging effect was achieved at 0.5% addition, with a mud cake permeability of 6.3 × 10−5 mD, a plugging rate of 72.12%, an artificial core permeability of 4.1 × 10−4 mD and a plugging rate of 88.41%. The nano plugging agent poly (MMA-BA-ST) can enter the nanopore joints under the action of formation pressure to form an effective seal, thus reducing the effect of filtrate intrusion on well wall stability.

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Study on Performance Evaluation of Profile Control System with High Temperature Resistant Weak Gel Prepared from the Produced Fluid

Tang¹,

Wang²,

Gao³

et al. 2023

Chem Technol Fuels Oils

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Experimental Study of Oilfield Water Plugging with Organic Chromium Gel

Cited by 10 publications

References 5 publications

Exploratory Test of Horizontal Drilling Plugs and Water Shutoff Technology in X Horizontal Gas Well

Exploratory Test of Horizontal Drilling Plugs and Water Shutoff Technology in X Horizontal Gas Well

Synthesis and Plugging Performance of Poly (MMA-BA-ST) as a Plugging Agent in Oil-Based Drilling Fluid

Study on Performance Evaluation of Profile Control System with High Temperature Resistant Weak Gel Prepared from the Produced Fluid

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