Latest "ONGC Innovation Challenge"

Mud Loss in wells

Mud losses while drilling is a serious problem in the Mumbai Offshore, affecting drilling time and well productivity adversely and increasing the well cost. Mumbai Offshore oil field is a multilayered reservoir. The producing reservoir of the fields is mainly comprising of fractured carbonate which is highly porous with various dimensions of porosity i.e. micro, meso and macro. The intensity of fluid invasion is very high due to the pattern and lithological characteristic (cavernous, vugular, fractured formation). Initially, wells were drilled using conventional or non-conventional drilling …

Sand Influx Control

ONGC is in the core business of exploration and production of oil and gas from various Onshore and Offshore fields in India. Oil and gas is usually trapped in porous rock composed of sandstone or Limestone. Many of the sandstone formations are poorly consolidated which leads to the production or incursion of sand and fines particles along with oil or gas.
Sand production can drastically effect on production performance of the wells, damages downhole equipment and surface facilities and increases the cost of production. It can also …

Data Computation and Analytics

In ONGC, there is a variety of database. In terms of exploration, there are databases in the form of reports which have been scanned such as those kept at CEGDIS, E&D Directorate or KDMIPE at Dehradun. Apart from this there is EPINET database, which covers most of the Well database, Seismic database and Well Logging database. The Well database is available in FINDER Format, which has been designed by a global leader in such solutions, while the Seismic and Logging database are in the form of SEGY and LAS files respectively.

Flow Improvement

Improving flow of High Paraffinic and ashphaltinic crude in flowlines/pipelines. The crude oil flow in the pipelines involves flow of fluid of the following nature

1. High Paraffinic and/or Asphaltenic crude oil
2. High WAT / Pour Point
3. Low Ambient temperatures
4. Non-piggable pipelines
5. Long tied-back flowlines

Artificial lifting Equipment

The prevalent artificial lift modes in ONGC are Gas Lift, SRP, and ESP & PCP. Jet pumps were also tried, but have not been used extensively.

i) The challenges include
a) Mechanical failures of lift equipment due higher deviation resulting in higher stresses.
b) Operational inefficiencies resulting due to higher propensity of phase segregation in horizontal well bores…