Novel Dual Function Surfactant Package Helps Shaped-Memory Polymer to Activate and Remediate the Filter Cake in Open Hole Completions

2019 ◽  
Author(s):  
Ajay Addagalla ◽  
Ishaq Lawal ◽  
Balraj Kosandar ◽  
Parvez Khan ◽  
Hedy Suherdiana
Keyword(s):  
Filter Cake ◽  
Dual Function ◽  
Open Hole

Novel Dual Function Surfactant Package Helps Shaped-Memory Polymer to Activate and Remediate the Filter Cake in Open Hole Completions

2019 ◽  
Author(s):  
Ajay Addagalla ◽  
Ishaq Lawal ◽  
Balraj Kosandar ◽  
Parvez Khan ◽  
Hedy Suherdiana
Keyword(s):  
Filter Cake ◽  
Dual Function ◽  
Open Hole

scholarly journals Experimental approach for assessing filter-cake removability derived from reservoir drill-in fluids

2021 ◽  
Vol 11 (11) ◽  
pp. 4029-4045
Author(s):  
Asad Elmgerbi ◽  
Gerhard Thonhauser ◽  
Alexander Fine ◽  
Rafael E. Hincapie ◽  
Ante Borovina
Keyword(s):  
Potassium Carbonate ◽  
Filter Cake ◽  
Experimental Methodology ◽  
Drilling Fluids ◽  
Cleaning Efficiency ◽  
Fluid Systems ◽  
Open Hole ◽  
Lift Off ◽  
Dynamic Filter ◽  
Cake Removal

AbstractPredicting formation damage in cased-hole and open-hole completion wells is of high importance. This is especially relevant when the damage is caused by reservoir drill-in fluids hence being well-bore induced. Cake filter removal has proven to be a good approach to estimate induced damage and to evaluate drill-in fluids’ performance. We present an experimental methodology to evaluate filter cake removal, which could be achieved during the well's initial production. An improved experimental setup, to the ones presented in literature, has been developed to enhance data quality. A twofold approach was used for setup design, and first, it can be integrated with devices used to evaluate the static/dynamic filter-cake. Second, it can be used to simulate more realistic cases (field related) by adjusting the experiment parameters. Hence, to replicate the expected drawdown pressure as well as the corresponding flow rate of the studied reservoir. Three key indicators directly related to filter-cake removal were used as evaluators in this work. Lift-off pressure, internal and external filter cakes removal efficiency. Three reservoir fluid systems were studied, two polymer-based and one potassium carbonate. Results show that pressure required to initiate the collapsing process of the filter cake is not significant. Polymer-based drilling fluids showed better performance in terms of external and internal filter cake cleaning efficiency comparing to potassium carbonate. Moreover, we observed that filtrate volume has no clear relation with the degree of residual damage.

Delayed Reaction Micro-Emulsion Fluid to Clean Oil Base Mud Filter Cake Damage in Open Hole Completions

2016 ◽  
Author(s):  
Ajay Kumar V. Addagalla ◽  
Balraj A. Kosandar ◽  
Ishaq G. Lawal ◽  
Prakash B. Jadhav ◽  
Aqeel Imran ◽  
...  
Keyword(s):  
Filter Cake ◽  
Delayed Reaction ◽  
Open Hole ◽  
Micro Emulsion ◽  
Emulsion Fluid

Reservoir Drilling, Completion and Breaker Fluid Qualification for Direct Injection Wells on the Johan Castberg Field – A Multi-Disciplinary Study to Secure Injectivity

2021 ◽  
Author(s):  
Charlotte Eliasson ◽  
Ove Braadland ◽  
Håvard Kaarigstad ◽  
Anne-Mette Mathisen ◽  
Zalpato Ibragimova ◽  
...  
Keyword(s):  
Filter Cake ◽  
Drilling Fluid ◽  
Direct Injection ◽  
Time Frame ◽  
Development Project ◽  
Fluid System ◽  
Injection Wells ◽  
Field Development ◽  
Fluid Systems ◽  
Open Hole

Abstract For the Johan Castberg field development project, injector wells are important for achieving high production and overall high recovery factors. Injectivity has become more important due to limitations in injection pressures and required control of fracture growth. Securing injectivity has been identified as one of the project’s main risks, making drill-in fluid and breaker fluid system qualification a vital parameter for success. Operational procedures and completion design also affect the effectiveness of breaker fluid placement and, thus, the overall injectivity of the well. In this paper, we present a cross-disciplinary systematic approach for the reservoir drill-in fluid and breaker fluid qualification to ensure injectivity in these wells. Two wells were selected for covering the expected pressure and temperature range of the field in an environmentally sensitive area. Two independent fluid systems were designed, where the bridging material consisted of either sized salt particles or calcium carbonate particles. The open hole completion design has been optimized for an effective breaker fluid placement, using a modified gravel pack system with a wash pipe. The displacement sequence has been optimized for effective deployment. An extensive laboratory test matrix for both the reservoir drilling fluid (RDF) and breaker fluid system was established, including thorough analysis of the interaction between the deposited filter cake and the breaker fluid system. The RDF and breaker fluid formulation optimization was performed whilst keeping in mind the operational requirements and the well’s future injectivity The presented results show successful qualification of two independent fluid and breaker fluid systems where filter cake breakthrough is achieved within the desired time frame. The fluid systems in combination with the lower completion design and operational procedures ensure maximal reservoir exposure of the breaker fluid solution and enable rapid deterioration of the filter cake.

Delayed Action Micro-Emulsion Breaker and Its Applications to Improved Completions Operations – An NNPC/FEPDC JV Approach During Completions Operations

2021 ◽  
Author(s):  
Ebuka Ifeduba ◽  
Bernard Ainoje ◽  
Tunde Alabi ◽  
John Akadang ◽  
Ena Agbahovbe ◽  
...  
Keyword(s):  
Calcium Carbonate ◽  
Filter Cake ◽  
Drilling Process ◽  
Well Control ◽  
Drain Hole ◽  
Open Hole ◽  
Micro Emulsion ◽  
Delayed Action ◽  
Isolation Device ◽  
Mild Acid

Abstract In horizontal open hole wells, the formation of filter cake while drilling the open hole section of the well is desirable. This filter cake serves the purpose of forming a semi-impervious layer around the reservoir drain-hole. This layer helps reduce losses considering the overbalance required for well control during drilling. It also serves as an additional structural support to keep the open hole stable when the drilling bottom hole assembly (BHA) is pulled out of hole and the screens and lower completions accessories are being run in hole. However, when thewell is put into production, the filter cake becomes a contributor to skin and poor reservoir productivity. It is therefore required to get rid of the filter cake after running the screens and the lower completion. Having procured and prepared the sand screens for deployment after drilling the open hole section, it is important that they are run to the bottom successfully with minimal damage and plugging. Usually, the open hole section of the horizontal well is drilled with specially formulated drill-in-fluids (DIF). Since this section is drilled in over balanced mode, the exerted pressure keeps the hole open so that the sand screen can be run successfully. The DIF replaces the drilling mud used to drill the earlier hole section(s) but in addition to providing well control via overbalance and transporting cuttings from the hole to surface, it also minimizes invasion damage to the reservoir pay zone. A commonly used weighing material when densities up to 11.5ppg are required for well control is calcium carbonate (CaCO3). When densities above 11.5ppg are required (for deeper, abnormally pressured reservoirs), it becomes necessary to weight up the mud with a heavier material, usually barite + CaCO3. During the drilling process, this overbalance pressure exerted on the reservoir forces the CaCO3 out of the DIF solution and it forms a semi-impervious filter cake on the sand face of the reservoir. This desirable filter cake helps minimize excessive fluid losses into the reservoir hence limiting invasion and damage. It also contributes to the structural integrity of the open hole, keeping it stable prior to running of the screens. Depending on the weighting material used in the drilling of the reservoir drain-hole, the micro-emulsion breaker (MEB) can be designed to break down the filter cake and any undisolvedparticulates can be mobilized and water-wetted and can be then flowed during production or injection. The challenge is that depending on the lower completion configuration, it may take some time to get the wash pipe and work string out of the lower completion and close the formation isolation device. In some cases, it is possible for the formation isolation device to fail. If the Micro-emulsion Blend (MEB) is quick acting, any of these scenarios can lead to uncontrollable losses and serious difficulties in continuing the completion operation. This elucidates the need for a delayed acting MEB treatment. Lab tests and analysis involving the exact DIF /filter cake and various compositions of the MEB at downhole conditions to arrive at the required delay in action. It is critical to ensure that the delayed action does not result in reduced efficacy of the treatment. Hence, the MEB is not diluted for slow action but rather it is engineered combinatorially with a retarder and downhole mild acid generating microemulsion chemistry that gradually generates the necessary mild acid that will slowly dissolve the bridging materials (eg. calcium carbonate) in the mud withtime and allows the full strength of the MEB to take effect after the stipulated delay period. This paper will focus on the lab analysis and iterations to arrive at an optimal MEB blend.

A Step Change in Open Hole Gravel Packing Methodology: Drilling Fluid Design and Filter Cake Removal Method

2007 ◽  
Author(s):  
Mathew M. Samuel ◽  
Abdul Hameed Ahmad Mohsen ◽  
Aziz Ejan ◽  
Matthew Alexander Law ◽  
Chao Wei Wrong ◽  
...  
Keyword(s):  
Filter Cake ◽  
Drilling Fluid ◽  
Step Change ◽  
Removal Method ◽  
Open Hole ◽  
Gravel Packing ◽  
Fluid Design ◽  
Cake Removal

Development and Trial of Technology for Open Hole Wells Performance Enhancement in GoM

2021 ◽  
Author(s):  
Luis Peixoto ◽  
Wilfred Nathaniel Provost ◽  
Jesse Thomas Gerber
Keyword(s):  
Filter Cake ◽  
Performance Enhancement ◽  
New Technology ◽  
Injection Rate ◽  
Differential Pressure ◽  
Successful Implementation ◽  
Well Performance ◽  
Noticeable Effect ◽  
Open Hole ◽  
Well Injectivity

Abstract Open hole (OH) completions are not very common in the GoM, but the area has seen an uptick in OH wells in recent years, and a few big projects have elected to use the same completion archetype. There are several different ways to complete an OH well, and one of these completion techniques involves running screens across the OH in Drill-In fluid (DIF), displacing the DIF out of the OH with brine, and then setting the packer, before pumping a filter cake breaker, designed to remove the filter cake and restore the reservoir permeability to near pre-drilling levels. A review of past open hole (OH) well completions in GoM revealed that there was an inconsistent action of the breaker on the filter-cake: sometimes the breaker would react quickly, and sometimes there was no noticeable effect. This study led to the development of a new technology to allow better displacements of the OH, with the ultimate objective of reducing initial well skin induced by the drill-in fluid (DIF) and filter cake. It was theorized that the low displacement rates would lead to poor removal of the mud from the OH, in turn leading to a poor breaker action on the DIF filter cake and a long-term impact on well injectivity and increased OPEX, as these wells tend to need an initial stimulation within a short timeframe after initial completion. The approach used was to develop a new tool to allow faster displacement rates, and test it on a trial well, to verify the results and validate this theory. To solve this problem, a new tool was proposed, developed and fully tested in a tight deadline of 6 months. The new module allows up to 9 bpm rates and up to 3,500 psi differential pressure before setting the packer, versus the previous ∼800 psi differential pressure limit, present in all tools in the market, for that casing size (7 5/8"). During the first well trial, the tool allowed a displacement of the OH at double the pump rates obtained in previous wells in the same basin, with similar OH lengths, leading to the smallest volume of contaminated fluid interface seen to date, indicating a much better displacement. Once the well was put online, it achieved an injection rate above expectations, even when the drilled OH interval penetrated significantly less net sands than originally planned. The results on this single well trial seem to corroborate the theory posed, however it is recognized that more data is required to be certain of its results, and that will only come with time, as well performance is measured and compared with other wells that did not use the same technology. The novelty of this new technology is the ability to obtain a better displacement of the OH, leading to a better breaker action and well cleanup in OH completions. Although the trial well was an injector well, the technology is equally applicable to producer wells. The paper will cover the problem description, installation procedures, development and testing of the technology, design aspects of using the technology and the successful implementation in the trial well.

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