Testing LCM on a Large Scale for Geothermal Drilling Applications Using a Novel Experimental Setup

Description

Rheology data obtained from flow loop tests, performed using different lost circulation materials (LCM) to study their effect on fluid rheology and wellbore hydraulics. The sealing performance of different LCM was tested using different fracture sizes. Five academic papers / reports derived from this research are also presented.

Resources

Name Format Description Link
Rheological Properties of Drilling Fluids Containing Special Additives PDF Paper was presented at the 46th Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, February 15-17, 2021. Open resource
Evaluate the Sealing Efficiency of Lost Circulation Material.pdf PDF AADE paper - "Evaluate the Sealing Efficiency of Lost Circulation Material on a Large Scale for High-Temperature Drilling Applications". The paper was prepared for presentation at the 2022 AADE Fluids Technical Conference and Exhibition held at the Marriott Marquis, Houston, Texas, April 19-20, 2022. AADE-22-FTCE- 083. Open resource
Testing Lost Circulation Material on a Large Scale for Geothermal Drilling Applications.pdf PDF SGW paper - "A Novel Experimental Setup for Testing Lost Circulation Material on a Large Scale for Geothermal Drilling Applications". The paper was presented in the 47th Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, February 7-9, 2022. SGP-TR-223. Open resource
Significance and complications of drilling fluid rheology.pdf PDF Geothermics paper - "Significance and complications of drilling fluid rheology in geothermal drilling: A review". The paper was published in Geothermics 93 (2021) 102066. Open resource
Experimental Investigation of a Smart LCM.pdf PDF GRC paper - "Experimental Investigation of a Smart LCM Using a High-Temperature Flow Loop for Geothermal Drilling". The paper was published in GRC Transactions, Vol. 45, 2021. Open resource
Experimental study on rheological and settling properties of SMPs.pdf PDF JPSE paper - "Experimental study on rheological and settling properties of shape memory polymer for fracture sealing in geothermal formations". Published in the Journal of Petroleum Science and Engineering 208 (2022) 109535. Open resource
Rheology Screening for Mud Additives.xlsx XLS The rheology screening experiments aimed to evaluate the performance of different additives to be used as viscosifier for the base fluid. Different fluid formulations were prepared in the lab by adding the additives individually to tap water in various concentrations (1 to 5 lb/bbl). These additives are PAC-L, THERMA-CHEK, POLYAC PLUS, and THERMA-VIS. Open resource
Summary of Fracture Sealing Experiments in HT Flow loop.XLSX XLS The sealing performance of different LCM was tested using different fracture sizes. The LCMs used are shape memory polymer, calcium carbonate, walnut, and cedar fiber. The fractured discs were designed and prepared using a 3D printer. The experiments were performed at 310℉ using the high-temperature flow loop under dynamic conditions. Open resource
Summary of LCM Transportation Experiments in HT Flow loop.XLSX XLS To study LCM transportation and settling behavior, mud samples were mixed in the high temperature flow loop by adding each LCM to a base fluid that consists of water and a viscosifier to carry and suspend the LCM particles. Different parameters were considered in the experiments, such as concentration, temperature, flow rate, pipe rotation speed, and inclination angle. Open resource
Summary of Rheology Experiments in HT Flow loop.XLSX XLS Rheology experiments were performed using different LCMs to study their effect on fluid rheology and wellbore hydraulics. The rheology data obtained from the high temperature flow loop was analyzed to determine the rheology model that fits the data. Open resource

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