Acquisition

SR2020’s patented tubing deployed, analog systems are unrivaled in the industry

High sample rate analog system to capture full wave field
Easily in/out of horizontal/deviated wells
Precise depth registration and high clamping force
From 80 to 400 levels
Deployment systems have been field proven with over 100 jobs
The system is assembled on-site for careful deployment
SR2020 can either provide its own recording system or connect to an industry standard system

SR2020 is the leading oil & gas service company to offer long, wide aperture, 3-component geophone arrays for down-hole deployment and acquisition. Our standard tubing deployed borehole seismic arrays have the option of delivering 80, 160, 240, 320 or 400 levels. SR2020’s acquisition system can be easily deployed in vertical, deviated, and horizontal wells to properly tie surface seismic data to down-hole date necessary improving reservoir imaging, modeling and characterization.

Borehole Receiver and Conveyance System Advantages

SR2020’s advanced borehole receivers are used to capture sonic signals and transmit them via our specially designed cables to recording systems. The key advantages of our system include:

3 Component receivers are designed to capture data from any direction, at very high sampling rates and over a very large capture area
Receiver arrays use dedicated twisted wire pairs to connect to each channel to eliminate loss of bandwidth due to digital under-sampling. This enables recording 1KHz or more bandwidth where available
No critical electronic components are deployed down-hole to improve reliability caused by components that can fail
80 – 400, 3C, clamped levels (up to 1200 channels for 400 levels) allows for cost effective recording of the large data volumes necessary for 3D imaging. We can record more data in less time
Our unrivaled high clamping force (1200 lb, 5500 N) ensures high vector fidelity and high frequency response for better data quality
The modular array flexibility can be deployed in single wells or multiple wells at one site for operational efficiency
The system is designed for extreme operating conditions including extreme heat or cold and high pressure

Receiver Specifications

Maximum depth capability: 11,500 ft (3500 m)
Maximum operational temperature: 225°F (110°C)
Maximum operational pressure: 25,000 psi (170 MPa, 1700 atm)
Array lengths 4,000 – 20,000 ft (1200 – 6100 m)
Receiver arrays use dedicated twisted wire pairs to connect to each channel
Standard receiver pod spacing of 25 or 50 ft (7.6 or 15.2 m)
Deployed on standard production tubing or drill pipe
Vertical, deviated or horizontal wells (no well tractors required)
Omni directional geophones – no gimbling used
Continuous sampling of the wave-fields without moving the array
Redeployable or permanent installations for either repeat surveys or long term monitoring (4D)

SR2020’s receiver array deployment system has been field proven with over 100 jobs

SR2020’s standard 80 level receiver array deployment system consists of 80 individual pod housings spaced either 25 or 50 feet apart by joints of standard production tubing. The maximum well I.D. can vary from 4.5” to 8.5” depending on the casing size in the well. The array can be completed to surface from the top geophone pod housing using similar size production tubing.

SR2020’s system is assembled on-site for careful deployment

SR2020’s receiver array deployment system can be easily transported in a single cargo container and quickly assembled at the well site by a small group of trained field personnel.

1. Geophone pod housings are attached between the precisely measured joints of production tubing

2. Cables with mounted geophone packages are spooled off and combined with pod housings

3. A standard work over rig or crane are used to lower the complete package into the well

4. Combination cable, geophone pods and tubing are carefully lowered through the well head

5. Hand slips and split slip bowl are used to hang the tubing

6. A high clamping force connection between the casing and geophones is achieved by inflating the geophone pod bladders with N2

SR2020 typically deploys at least an 80-level 3C (V, H1, H2) array providing for a total of 240 channels per array. We can deploy as many as five 80-level 3C clamped arrays into one well for a total of 400 levels, or 1200 channels, in one well. We can also deploy the receiver arrays in multiple wells simultaneously. This will increase the reservoir volume imaged significantly. Our arrays can be deployed in vertical, deviated or horizontal wells. Typical, expected rig time estimates for deploying and recovering a single 80-level array with 50’ pod spacing are:

Tripping In: 500 ft – 750 ft/hour, or 4 – 6 min. per geophone pod, after the crew is trained.
- Examples:
  To a depth of 4,000 ft will take 8 – 12 hours tripping time including training.
- To a depth of 8,000 ft will take 12 – 20 hours tripping time including training.
Tripping Out: 750 ft – 800 ft/hour
- Examples:
  From a depth of 4,000 ft will take 6 – 10 hours tripping time.
- From a depth of 8,000 ft will take 10 – 18 hours tripping time.

Tubing deployed, large antenna systems for the full-range of high definition borehole imaging challenges.