Abstract

This paper will describe how good project management and communications between the various project stake holders resulted in the successful completion of the Raageshwari 15 wells fracturing campaign. The 93 fracturing stages were completed under budget and in a shorter time frame than planned. The management of the project included multiple and diverse operations and equipment including perforating, wireline, well testing, hydraulic fracturing, HSE, and waste water management.

The Raageshwari deep gas field (RDG) is a deep, tight, high condensate gas reservoir located in Rajasthan, India. The 15 wells were located on 3 separate pads within 2 km radius. Their location, in a sparsely populated arid part of India adds to the logistical challenges. Some of the key challenges during the project were:

  • Key operations such as fracturing and perforating cannot be performed at night.

  • Economic handling and disposal of waste water.

  • Continuous supply of water suitable for fracturing and other wellsite operations.

  • Limited space available on the well pads.

  • Requirement for simultaneous operations involving high risk activities such as perforating and high pressure pumping.

  • High CT cleanout frequency due to the requirement of underflushing the frac stages, close proximity of the adjacent stages, and the small volume in the 3 ½ inch monobore completions.

  • Logistics and supply chain management in a remote location.

Solutions for these obstacles included improved procedures, workflows and key technology introductions. These included:

  • Simultaneous rig up to multiple wells.

  • Simultaneous operations covered through Risk assessment and controls in place.

  • Selective perforation technology to reduce perforating time.

  • Mechanical evaporators and a robust CSR team for waste water management.

The various optimizations resulted in a reduction in days per frac stage from 4 in the previous campaigns to 2 in this campaign. The project was delivered with 0 LTI (Lost Time Injuries), and a phenomenal HSE record due to robust safety procedures, frequent audits, safety drills etc.

This paper will detail how the challenges in this project were overcome resulting allowing a high speed fracturing campaign to be successfully executed in a remote location.

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