This document provides a summary of Shah Alam's presentation for the third quarter (January 2023 to April 2023) as a senior officer on probation in the Geophysics Department at Oil India Limited. The presentation outlines seismic data acquisition activities during this period, including an in-house 3D seismic survey from January to March 2023 and a 2D seismic survey from March to April 2023. Details provided include survey areas and objectives, acquisition parameters, crew and equipment capabilities, field operations, and lessons learned. Corporate social responsibility (CSR) initiatives, conduct and discipline rules, and the modified standing order policy are also summarized.

1. 1
Mentored By:
Shri Mukesh Kumar
Chief Geophysicist
Geophysics Department
Presented By:
Shah Alam
(OIL ID: 204417)
Senior officer on Probation
Geophysics Department
20 January, 2023 – 19 April, 2023

2. 2
Presentation Outline
 Glimpses of Last Quarters
First Quarter (From 20.07.2022 to 19.10.2022)
Second Quarter (From 20.10.2022 to 19.01.2023)
 Seismic Data Acquisition (Third Quarter From 20.01.2023 to 19.04.2023)
 In House 3D Seismic Survey Crew (From 20.01.2023 to 06.03.2023)
In House 2D Seismic Survey Crew (From 07.03.2023 to 19.04.2023)
 CSR, CDA, MSO
 Explosive Safety Norms-During Seismic Survey
 Workflow & Introduction of Seismic Data Acquisition
 DGPS and Implantation Survey
 Capability of 3D Seismic Survey Crew
 2D Seismic Field Operation
 Low Velocity Layer Survey
 Learning Points
 Survey Area, Objective & Parameters
 Survey Area, Objective & Parameters
 Capability of 2D Seismic Survey Crew

3. 3
Glimpses of First Quarter (From 20.07.2022 to 19.10.2022)
Journey in Oil India Limited
Executive Development
Programme
Induction
Geophysics Department
Seismic Data Processing

4. 4
Glimpses of Second Quarter (From 20.10.2022 to 19.01.2023 )
4
North Lakhimpur 2D Seismic Data Processing: Field
Data
Processed
Output
Survey Information
Geometry Update
Statics Application
Noise Attenuation
Deconvolution
Velocity Analysis
Regularization and Interpolation
Migration
Post Stack Processing
Pre-Processing
Imaging
Post
Processing
Final Processed output
(Ready to interpret)
Raw grains (Contain
all nutrition but not
ready to eat)
Cooked meal
(Sumptuous and
ready to serve)
Raw Data (Contain all information
but directly not interpretable )

5. 5
Seismic Data Acquisition
(From 20.01.2023 to 19.04.2023)

6. 6
Reconnaissance
survey
Pre-Survey Studies
Survey Designing
(Parameter
optimization)
Planning (man and
equipment
mobilization, permit
clearance)
GPS and
Implantation Survey
Recording
Operations
Report preparation
and submission
3D survey layout
Fold
2D Survey Layout
FOLD
Workflow
Workflow & Introduction Of Seismic Data Acquisition ()

7. 7
Ningru & Ningru Extn. PML
Block Acquisition Parameters
Receiver
Interval
30m
Shot Interval 60m
Rec. Line
Interval
420m
Shot Line
Interval
420m
Spread 210-210
No. of Rec.
Line in Swath
8
No. of Active
Rec. Per Line
3360
Nominal Fold 60
About Survey Area &
Objective
Basin Assam Self
Location/ State Arunachal
Pradesh
Block PML
Block Area (Sq.
km)
200
Objective to
Image
Girujan &
Tipam
Formation
(Miocene)
Survey Area, Objective & Parameters (3D Survey Crew)

8. 8
LINK – 508 XT-FDU-4-LAND-40M (CABLE)
SG 10 MARSH STR 6X2 (GEOPHONE)
TIFO CABLE
Recording System: Sercel 508 XT
CX-508
Capability of 3D Seismic Survey Crew
WING AFU HARVESTING RACK
MONITOR
System Components-Cableless
System Components- with Cable
Wireless Recording

9. 9
Decide whether to do
DGPS Survey
Marking suitable
points on map
Setting up GPS base and rover
at known and unknown points
respectively
Posting processing of rover using base
data
Rover setup
Peg to mark the location Receiver location
DGPS & Implantation Survey
Base setup
DGPS Data Processing

10. 10
Pathsala & Mangaldoi (2D)
Block Acquisition Parameters
Receiver Interval 20
Shot Interval 40
Far Offset 4990 m
Near Offset 10 m
Spread Symmetric Split
No of active
Channels
500 per Shot
Source Type Explosive
Nominal Fold 125
About Survey Area &
Objective
Basin Assam Shelf
Location/ State Assam
Block Name
OALP-VII
AS-ONHP-2021/2
AS-ONHP-2021/3
Target (in GLKM) 200.00
150.00
Objective to
image
Langpar
Formation
Current Status
(From
09.02.2023 upto
10.04.2023)
200.48 GLKM
98.48 GLKM
AS-ONHP-2021/2 (Pathsala)
AS-ONHP-2021/3 (Mangaldoi)
Survey Area, Objective & Parameters (3D Survey Crew)

11. 11
GSX box
Geophone Layout
Line Viewer
BX battery
Recording System: Cableless Geo-space
Capability of the 2D Seismic Survey Crew
Data Transfer Racks
Monitors
Field Component of the System Data Harvesting Unit

12. 12
Deploying
Geophone, GSX
box & Battery
Field QC using
Line Viewer
Shooting
Collecting GSX
boxes
Reaping data
collected by GSX
boxes using
Georeaper
Generating
deliverables
using
Geomerger
Shooting
Priming
Blaster
Field QC
Deploying Receiver
2D Seismic Field Operation
WALKIE
TALKIE
Seismic Gathers

13. 13
Objective: To indentify the weathered layers , determine their thickness ,velocity.
LVL Interpretation
Methodology
Velocity of layer using slope
Velocity Contrast
T-X Plot
LVL Thickness
Low Velocity Layer Survey

14. Explosive Safety Norms-During Seismic Survey
 Only authorized licensed person should be deputed to fire the
explosive.
 Proper safety distance should be maintained for blasting shot
holes near houses.
 The entire shooting crew should wear PPE to guard against any
falling debris (especially in boulder bed/hard rock areas).
 The blasted holes must be filled with earth to avoid injury to
people or animals.
 Shooting operations should be suspended if there is any
possibility of lightning in a cloudy weather.
 Detonators are kept in wooden insulated boxes.
 Detonators and explosives should not be carried together.
 A record should be maintained of explosives and detonators
received, consumed and balance at the magazine.

15. 15
Corporate Social Responsibility (CSR)
Schedule VII and section 135 of the Companies Act-2013.
CSR Vision OIL is a Responsible
Corporate Citizen deeply
committed to socio-
economic development in its
areas of operation.”
OIL CSR
Healthcare
Education
Skill
Development
Sustainable
Livelihood
Rural Sports
Swachh
Bharat
Abhiyan

16. 16
Oil Executives’ Conduct, Discipline and Appeal (CDA) Rule
16
• Came into force on September 30, 1982
• Last Amendment 10.08.2022
Application
These rules shall apply to all employees except:
• Those in casual employment or paid from contingencies.
• Those governed by the Standing Orders under the Industrial
Disputes Act, 1947.
Some CDA
Rules Regarding
• Misconduct
• Penalties
• Criticism of the government and the company
Penalties
Penalties may be imposed, on an employee, for misconduct
committed by the employee or for any other good and sufficient
reasons.

17. 17
Modified Standing Order (MSO)
Under the Industrial Employment Act of 1946 and Industrial Employment Amendment
Act, 1982.
Applicability In all the units of Oil India Limited in North Eastern Region
Classification of
Workmen
Permanent, Probationer, Temporary, Apprentice
Recruitment
As per Company’s laid down policies and the Government Rules and
Regulations .
Record of Age Once recorded, no alterations can be done later.

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