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Collaborating Authors
- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)
Mineral material suspended or dissolved in solution which passes a standard glass filter and 0.45 1-1m filter and does not evaporate below 180 C. TDS is generally used as a gross indicator of the mass of dissolved salts in a solution, but the analytical method is subject to interferences from colloidal material.
- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)
Mineral material suspended or dissolved in solution which passes a standard glass filter and 0.45 1-1m filter and does not evaporate below 180 C. TDS is generally used as a gross indicator of the mass of dissolved salts in a solution, but the analytical method is subject to interferences from colloidal material.
- Information Technology > Knowledge Management (0.40)
- Information Technology > Communications > Collaboration (0.40)
Abstract With an average gross operated production of 211,671 boepd in FY2015, Cairn India Limited (CIL) is the largest private sector producer of crude oil in India. In FY 14-15, around 120 wells were drilled in Mangala, Bhagyam and Aishwariya alone. Waste water generation in Operations has seen a massive increase in recent years because of increased production and an aggressive drilling campaign. CIL operates on Zero Surface Effluent discharge philosophy making it imperative to deliberate on waste water disposal strategy. Managing the huge volumes of waste water in a sustainable manner is a challenge. Accordingly, waste water treatment plant for reuse and waste pits and guard ponds were created to evaporate waste water. Due to waxy nature of oil in waste water, high level of suspended solids and bacterial degradation, natural evaporation is almost negligible. Waste water accumulation over a long period of time has resulted in inventory buildup of all the pits. It has become business critical requiring strategic focus to ensure business continuity and sustainability. Given the challenges of waste water management in onshore Oil & Gas operations, the paper describes the various technologies available in the market and tested by Cairn, results of market studies carried including pros and cons of each option, followed by pilot-scale implementation of the chosen technologies. The paper not only describes the success of the pilot studies and the related technical aspects, but also the commercial, socio-economic and stakeholder challenges and the approach to applying the selected option for full-field implementation. The paper concludes with suggested way forward for full-field implementation including associated challenges and success factors. The objective of this paper is to share the experiences of an operating company with other oil & gas Companies worldwide on various aspects relating to waste water treatment and management in onshore oil & gas operations. The typical process for an Oil & Gas Operator is to evaluate all aspects, right from technology finalization to economic optimization and finally develop an integrated roadmap for the entire project. A firm methodology was adopted to validate the technical as well as the commercial aspects of the project. The final treated water is put for reuse thereby delivering twin benefits in terms of handling waste water in a sustainable manner as well as optimizing the water footprint.
- Water & Waste Management > Water Management > Water Supplies & Services (1.00)
- Water & Waste Management > Water Management > Lifecycle > Treatment (1.00)
- Energy > Oil & Gas > Upstream (1.00)
Best out of Waste - Waste Water Management for Sustenance of Well Intervention Activities
Gupta, Abhishek (Cairn India) | Sharma, Vedant (Cairn India) | Parasher, Arunabh (Cairn India) | Thummar, Dinesh (Cairn India) | Satyarthi, Rajesh S. (Cairn India) | Rao, Eshwar (Cairn India) | Tiwari, Shobhit (Cairn India)
Abstract Drilling, Completion and Well Intervention operations generate waste water. With the increasing volume of well fluids being flowed back due to aggressive Well Intervention activities, there was a need to handle and dispose the waste water efficiently. This was required to maintain continuity of well flow back and stimulation operations in an efficient and sustainable manner without incurring additional cost keeping in mind the current Oil and Gas market scenario. This paper presents the "Best out of Waste" methodology adopted by the Well Services Department of Cairn India Limited to manage the huge waste water volumes by pooling in-house resources for developing Waste Water Treatment Project. This project as it stands today was brought together by first, evaluating various treatment methods such as EC (Electro Coagulation) unit, Chemical methods, Particle settling and Disposal methods such as natural evaporation, evaporators (Mechanical and Solar) and injection and further combining features of the above stated methods to gain maximum benefit. These evaluations led to selection of EC Unit combined with the effectiveness of Mechanical evaporators and Natural evaporation for decreasing the waste water footprint. Second, identifying a disposal well for treated water injection, established by various integrity and injectivity tests to confirm that the well was ready to accept the water with parameters and properties similar to that of EC unit output. The encouraging results in the injectivity tests proved to be the kick-off point of the project. Continuous monitoring of the treated water was also done to ensure the TSS and oil in water remained within the acceptable limits for injection, as per prevailing norms. Third, developing disposal pits and tank farm to facilitate the treatment and dumping of the treated waste water. Lastly, decreasing current waste water inventory along with reducing the OPEX involved with handling, transportation and disposal of the waste water. The key feature of this project was the utilization of above mentioned equipment's from internal resources of the company, which were either working stand-alone or were nonfunctional. Thus, the CAPEX for the project was brought to a bare minimum. The objective of this paper is to present the various technical, administrative and commercial aspects associated with this project and conclude with plans of further utilizing the treated water for future Fracturing, Stimulation and even completion jobs.
- Water & Waste Management > Water Management > Water Supplies & Services (1.00)
- Water & Waste Management > Water Management > Lifecycle > Treatment (1.00)
- Energy > Oil & Gas > Upstream (1.00)
- Asia > India > Rajasthan > Rajasthan Basin > Barmer Basin > Rajasthan Block > Mangala Field > Fatehgarh Formation (0.99)
- Asia > India > Rajasthan > Rajasthan Basin > Barmer Basin > Rajasthan Block > Mangala Field > Barmer Hill Formation (0.99)
- Asia > India > Rajasthan > Rajasthan Basin > Barmer Basin > Block RJ/ON-90/1 > Mangala Field > Fatehgarh Formation (0.99)
- Asia > India > Rajasthan > Rajasthan Basin > Barmer Basin > Block RJ/ON-90/1 > Mangala Field > Barmer Hill Formation (0.99)