Design and development of instant linear gel for coal bed methane gas operations

Linear gel fracturing fluids are expressed with an extensive range of materials/polymers in an aqueous base. Earlier we developed fracturing linear gel with fossil diesel, bio-diesel and also used suspending anti-settling agents and emulsifiers. Here we report on a novel and an efficient method for the preparation of linear gel direct mix with water, guar gum and sodium acetate together instantly. In this research work, we used water instead of diesel without any need to mix anti-settling agents, suspending agents, emulsifiers that resulted in 30 viscosity linear gel. Degradation pattern observed from the breaker test showed that a reduction in gel viscosity depends on time, temperature & breaker concentration. Ammonium per sulphate or Ammonium per oxidisulphate and enzyme-G were used for oxidation purpose to break the gel gradually at a particular static temperature. Observations from experiments revealed that a small concentration of breaker provides rapid break compared to oxidative breakers. This article, designing of fracturing fluids describes how to use the fluid's viscosity generated by the gelling agents like guar gum for CBM operations.

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Development of Instant Linear Gel for Coal Bed Methane Gas Operations

10.53902/tpe.2021.01.000511 ◽

2021 ◽

Vol 1 (3) ◽

Author(s):

Ramana Murthy RVV

Keyword(s):

Sodium Acetate ◽

Guar Gum ◽

Small Concentration ◽

Coal Bed ◽

Coal Bed Methane ◽

Ammonium Persulphate ◽

Gelling Agents ◽

Fracturing Fluids ◽

Degradation Pattern ◽

Suspending Agents

Previously we prepared fracturing linear gel with fossil diesel, bio-diesel and also used suspending, anti-settling agents and emulsifiers. But through this research, a novel and efficient method for the preparation of linear gel directly mixed with water, guar gum and sodium acetate together instantly. In this instead of diesel, we used water and no need to mix anti-settling agents, suspending agents, emulsifiers that resulted in 30 viscosity linear gel. Ammonium persulphate or Ammonium peroxidisulphate and enzyme-G are used for oxidation purposes to break the gel gradually at a particular static temperature. The degradation pattern observed from the breaker test showed that a reduction in gel viscosity depends on time, temperature & breaker concentration. Observations from experiments revealed that a small concentration of breakers provides rapid break compared to oxidative breakers. This article, designing of fracturing fluids describes how to use the fluid's viscosity generated by the gelling agents like guar gum for CBM operations.

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A Review of Linear Gel Fracturing Fluids

10.53902/tpe.2021.01.000501 ◽

2021 ◽

Vol 1 (1) ◽

Author(s):

Chavali M

Keyword(s):

Real Time ◽

Coal Bed ◽

Coal Bed Methane ◽

Final Temperature ◽

Bottom Hole ◽

Fracturing Fluids ◽

Optimum Utilization ◽

First Time ◽

Real Time Application ◽

Pilot Tests

Linear gel is prepared by treating bio-diesel with various water samplescollected from different water bodies. The new biodiesel based linear gel was employed in the recovery of oil wells through hydro fracturing and pilot tests were conducted for the first time. Viscosity of gel was measured at various bottom hole-circulating temperatures and it was found to vary from 32 to zero dial reading in the range of 45°C to 60°C. Gelwasobservedto break at 45°C and 60°C in 120 minutes. So, the final temperature was selected as 60°C for the application of gel for coal bed methane (CBM) wells. It was observed that higher levels of salinity in water helped in optimum utilization of gel in real time application.

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Research on and Application of Clean Fracturing Fluids in Coal-Bed Methane

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1092-1093.212 ◽

2015 ◽

Vol 1092-1093 ◽

pp. 212-215 ◽

Cited By ~ 1

Author(s):

Yi Dan Wang ◽

Hong Fu Fan

Keyword(s):

Methane Production ◽

Development Trend ◽

Coal Bed ◽

Coal Bed Methane ◽

Development History ◽

Action Mechanisms ◽

Fracturing Fluids ◽

Fluid Systems ◽

History Of ◽

The Development Trend

The development history of fracturing fluids is reviewed, the compositions and action mechanisms of the clean fracturing fluid systems used currently are analyzed, the recent research and application of the clean fracturing fluids in coal—bed methane production are summarized, and the development trend of clean fracturing fluids is presented in this paper.

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A novel hydraulic fracturing gel realization for unconventional reservoirs

Beni-Suef University Journal of Basic and Applied Sciences ◽

10.1186/s43088-020-00063-x ◽

2020 ◽

Vol 9 (1) ◽

Author(s):

R. V. V. Ramana Murthy ◽

Murthy Chavali

Keyword(s):

Hydraulic Fracturing ◽

Guar Gum ◽

Experimental Studies ◽

Cost Effective ◽

Ammonium Persulfate ◽

Smoke Point ◽

Unconventional Reservoirs ◽

Coal Bed ◽

Time Saving ◽

Suspending Agents

Abstract Coal bed methane reservoirs possess low to ultra-low permeability. In order to improve the production from CBM wells, stimulation techniques were deployed. Background This article reviews the most cost-effective, time-saving, and eco-friendly fracturing fluid which is a mix of water, guar gum, and sodium acetate. This article also provides a detailed study of hydraulic fracturing in unconventional reservoirs. Results Unlike using diesel, biodiesel we have prepared a cost-effective frac-fluid which is not having any smoke point which depicts it as eco-friendly fluid. In this method there is no requirement of anti-settling agents, suspending agents, emulsifiers. Gel breakers are more efficient to break the linear gel. Conclusion The breakers inorganic compound ammonium persulfate and hemicellulose liquid. A reaction takes place on linear gel as it breaks slowly at down hole static temperature at 50 °C and 65 °C. So, experimental studies also prove this method is applicable for unconventional reservoir operations.

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