Digital oil field - Pilot project (Assisted by M/s Schlumberger)

Common golals are:

1. Flow assurance

2. Production optimization

3. Predictive intervention

4. HSE advantages

5. Embracing technology and bring future ready

Besides, typical additional gains are:

1. Can prepare for upcoming large volume slug.. a major pain for procss opertions at GGS.

2. Predict the water cut behaviour vis a vis independent process variables say intermittant gs lift cycle time.

3. Augmenting focus of production engineer to higher quaity of work

Following discussed with Mr. Raj :

1. Response from ONGC

2. Way forward

     a. Well candidate selection ( Mix of GL and SF)

     b. Scoping phase wise/all at once ( may be 2 cluster to begin with - LPEK, MH4  and LP16 clusters were proposed)

     c. Security  responsibility

     d.  Modus oprandi

SMB shared preliminary draft concept for implementation and sought comment.

The word file containing basic setup to cover 29 wells eloborting instrmumentaton, workflow, methodology.

The document ws scanned and sent back with querries expecting discusion on queries next day.

Discussion with Mr. Raj of SMB(Mobile)

Following brought out 

1. Responsiblity matrix was discssed- security and maintenace.  Internal discussion at SMB being done to resolve issue.

2. Querry replies pending from ONGC. ONGC assured to share in 1-2 days.

3. SMB-The visible value can be driven only when entire Laipling field is taken for study

4. Gas lift optimzaion, well performance monitoring and reduction in field visits are value proposition

5. Good payback perod is expected subject to mitigation of constraints.

ONGC - Mr. Ashish Shukla EE(P) would be assisting the project.

M/s Schlumberger presented (online) the feedback on Laipling field survey.

The meeting chaired by ED-AM, Assam Asset and attended by:

1.GGM- SM, Asam Asset

2. Director(Onshore) representative 

3. Director (Expl ) representative

4. Schlumberger 

Outcome:

ED-AM appreciated the concept and asked to go ahead with pilot project.

Indicated various concerns viz. well site security issue, equipment maintenance and accuracy of meters.

Following queries:

1 Well and Network coverage of field

2 Well test data - few wells

3 Data measurement from field as of today- type of data received & frequency

4 Instrumentation details at GGS & manifolds

5 Any specific challenges faced by surface production team in field operations

Replies consolidated and sent to SM for vetting on 18th Jun.

Draft proposal presented by SLB describes instrumentation, workflows etc. Following points may be noted and clarification to be sought-

1. Document mentioned the wireless transmitters of long distance range 3km line of sight, while LPN wells are more than 8kms distant from gathering station. even LPN field manifold is also approx 7-8 km. 

2. proposal document talks about installing 5 metering instruments at wells sites for THP, CHP, ABP, FLT and lift gas flow measurement. It may be noted that GOR measurement/estimation for individual well is very important for Gas Lift optimization purpose, which requires a 2/3 phase flow meter in individual well flow lines, but draft proposal does not mention it. Clarification may be sought regarding this.

3. Can control elements also be included in the system (initially or even at a later stage) so as to make it more useful in many ways-

for gas lift wells: Diaphragm valve opening controlled based on timer as well as required annulus pressure buildup(measured by PT)

Cloud based gas lift network, as well as optimizing flow line availability.

for self flow wells: surface safety valves may be installed,