The Use of a Novel Spacer and Ultralow-Density Cement System To Control Lost Circulation in Coalbed-Methane Wells

2015 ◽  
Vol 30 (01) ◽  
pp. 76-85 ◽  
Author(s):  
Chengwen Wang ◽  
Ruihe Wang ◽  
Weidong Zhou ◽  
Fei Li
Keyword(s):  
Coalbed Methane ◽  
Lost Circulation ◽  
Cement System

Novel Cementing Solutions to Impede Lost Circulation with Highly Crush-Resistant Lightweight Cement System and Engineered Fibers

2016 ◽  
Author(s):  
T. Putra ◽  
A. Steven ◽  
V. R. Wedhaswari ◽  
M. S. Awalt ◽  
B. B. Natanagara ◽  
...  
Keyword(s):  
Lost Circulation ◽  
Cement System

scholarly journals Novel Expandable Cement System for Prevention of Sustained Casing Pressure and Minimization of Lost Circulation

ACS Omega ◽  
2021 ◽  
Vol 6 (7) ◽  
pp. 4950-4957
Author(s):  
Mobeen Murtaza ◽  
Zeeshan Tariq ◽  
Muhammad Kalimur Rahman ◽  
Muhammad Shahzad Kamal ◽  
Mohamed Mahmoud
Keyword(s):  
Lost Circulation ◽  
Cement System ◽  
Sustained Casing Pressure ◽  
Casing Pressure

Successful Approach in Curing Lost Circulation in Depleted Aquifer Formations by Utilizing a Combination of Swelling Polymer & a Shear-Rate Rheology-Dependent Cement System; Case Study in UAE Land Operation

2021 ◽  
Author(s):  
Raymond Saragi ◽  
Mohammad Husien ◽  
Agus Liber Maradat Sinaga ◽  
Peter Levison Mwansa ◽  
Esha Narendra Varma ◽  
...  
Keyword(s):  
Shear Rate ◽  
United Arab Emirates ◽  
New Technologies ◽  
Cost Effective ◽  
Success Rates ◽  
Lost Circulation ◽  
Operational Risks ◽  
Effective Manner ◽  
Cement System ◽  
Zonal Isolation

Abstract One of the greatest historically unsolved challenges to date in the United Arab Emirates is the failure to effectively cure the severe losses due to poor zonal isolation during drilling and cementing aquifer formations in particular the Dammam, UER & Simsima formations in the BAB field. Continuous efforts have been made to seek and pilot new technologies in UAE land operations to overcome drilling operation challenges, specifically chronic lost circulation in aquifer formations with the commitment to drive a more cost-effective operation and reduce the risk of Non-Productive Time (NPT). The current practice was not providing proper zonal isolation in the surface and intermediate sections. Most of the time aerated drilling was utilized while drilling the lost zones and conduct a top-up cement job to improve zonal isolation, but this results in limited reliability. It was necessary to identify a different approach to cure or significantly reduce the losses which would enable the hole section to be drilled successfully while minimizing operational risks, in a cost-effective manner. A technique combining two different technologies was selected: a swelling polymer lost-circulation material (LCM) that hydrates and helps reduce flow velocity into the formation, followed by a shear-rate rheology-dependent cement system. This cement system is a tunable and tailored slurry with thixotropic properties and has shown very cost-effective results with high success rates. It was then decided to tailor this approach to Abu Dhabi land operations to maximize wellbore asset value. After four subsequent trials targeting two different aquifer formations, the technique has shown tremendously promising results by successfully curing the losses providing above 80% returns. These combined technologies aim to eliminate or reduce effect of losses during cementing by performing the primary cementing job with complete returns or minor losses across aquifers thus enhancing wellbore integrity during the lifecycle of the well. It is hoped that this will eliminate, or at a minimum reduce production deferrals and subsequently improve plug and abandon (P&A) operations at end of field life. This paper aims to describe the challenges faced on the first three trials utilizing this technique and the solutions assigned for each trial based on the inputs, such as loss rate, formations interval exposed, design and lab testing for the pumped treatments as well as job execution details along with lesson learned for future jobs.

A Multifunctional Drilling Fluid for Coalbed Methane Drilling

2012 ◽  
Vol 455-456 ◽  
pp. 1317-1323
Author(s):  
Li Hui Zheng ◽  
Ming Wei Zhang ◽  
Yong Lin
Keyword(s):  
Coalbed Methane ◽  
Horizontal Well ◽  
Drilling Fluid ◽  
Drilling Fluids ◽  
Drilling Process ◽  
Water Production ◽  
Well Bore ◽  
Lost Circulation ◽  
Geological Conditions ◽  
Air Drilling

With extremely complicated geological conditions, there is abundant coalbed methane in the China's Ordos Basin Area. As a result of coexistence of different pressure systems in the same one naked well section, there are so many problems taking place occasionally during the drilling process, such as the formation lost circulation and collapse, which require the drilling fluid with a perfect rheology behavior and inhibitive to improve the well-bore containment. The coalbed methane well completions are diverse, usually including vertical well, horizontal well, multi-branch well, and other different well types. So the drilling fluid must have cuttings carried effectively and protect formation damaged to ensure that the process of drilling is security and smooth. Lots of drilling methods are used in the coalbed methane drilling, besides normal nearly balanced drilling, the under balance drilling fluids such as the air, fog, foam, etc particularly improved. All this drilling fluids require itself working compatibility with other fluids in the hole. Therefore, the special state-funded science and technology project has developed a novel bionic Fuzzy-Ball drilling fluid to meet the coalbed methane. Without additional equipments, this novel drilling fluids can be made, with non-solid phase and low density, 0.8~1.0 g/cm3. The inert solids can also be used to adjust the property to more than 1.0g/cm3, matching the near/under-balanced drilling. The formation well-bore containment can effectively improve to meet to the more than 1000 meters coalbed methane drilling in the open or low pressure formation, To portable cuttings effectively under low rate, the ratio of yield point and plastic viscosity can be adjusted to 1.0Pa/mPa•s or more. Combined with the air drilling, this novel Fuzzy-Ball material could not be converted to fluid to solve the formation water production, cavings, completion and other operations. 10 wells application of using the Fuzzy-Ball drilling fluid to complete the coal bed methane wells overcoming water production, collapse, lost circulation and air drilling etc, taking five branches well FL-H2-L, "U" horizontal well DFS-02-H2, water production and collapse well J35, air drilling CLY22 for examples, are introduced to indicate the bionic Fuzzy-Ball fluid application on the coalbed methane drilling spot.

Novel Low-Solids Shear-Dependent Cement System Used to Cure Severe Lost Circulation while Drilling: A Case History

2015 ◽  
Author(s):  
J. A. Urdaneta ◽  
K. Ravi ◽  
F. E. Delgado Gonzalez ◽  
J. M. Viera ◽  
R. Liaño Marinkovi ◽  
...  
Keyword(s):  
Case History ◽  
Lost Circulation ◽  
Cement System
Sign in / Sign up

Export Citation Format

Share Document