Well Architecture and Drilling in Shale Plays

Surveys  -  concept of  spatial relationship through accelerometers, magnetometers, and gyros.  Environmental issues caused by magnetic field variations, metals, etc.  Capturing and validating static surveys; understanding of EOU and traveling cylinder plots, and, anti-collisions practices.

HANDS-ON EXERCISE 1

• Apply field acceptance criteria on surveys.  Work through exercise applying magnetic correction, “dmag”.

Traveling Cylinder, Ellipse of Uncertainty and Anti-collision includes - concept of capturing and validating static surveys; un-derstanding of EOU and traveling cylinder plots, and, anti-collisions practices.

HANDS-ON EXERCISE 2

• Exercise will be developed where  each team determines min spacing and then positions themselves appropriately within the room relative to a “reference well”.

Well Design & Pad drilling includes - considerations in well design from lease line constraints to fracture wing length, to dog leg capabilities of tools.  Pad drilling will tie in multiple wells, simultaneous operations, and address complications such as anti-collision caused by drilling wells so close to one another.

Development note: expand on field stress mapping as well, drainage area, parallel well issues like pressure communication (maybe zip fractures)

HANDS-ON EXERCISE 3:

• Place a well based planned BHA build capabilities, dogleg constraints of tools, and location of lease line with consideration to EOU.

HANDS-ON EXERCISE 4:

• Assume that you are planning for PAD drilling and add a 2nd and maybe a 3rh a well based planned BHA build capabilities, dogleg constraints of tools, and location of lease line with consideration to EOU.

Equipment/Props/Software:  Prepare DOX flash drive so that class can participate in exercise using software.

MWD, LWD in lateral wells  –  Describe the different MWD systems (WDP, EMAG, mud pulse) as well as details of each.  Highlight key LWD technologies for geosteering, stress, and fracture identification

HANDS-ON EXERCISE 5:

• Make recommendation of MWD selection based on ROP, TVD depth and formation conductivity.
• Based on composited LWD profile (stress, effective porosity, and mineralogy) approximate a smart completion design over a geometric completion.

GeoSteering in lateral wells  –  Show how to place a well based on PeriScope in tight clean formations and images in higher resistivity shales.

HANDS-ON EXERCISE 6:

• Complete well placement exercise with PeriScope
• Complete well placement exercise with image.

Overview of motors & Rotary Steerable Systems  –  Describe applications and differences in push-the-bit, point-the-bit, hybrid, short bend motors, thin walled motors, etc. Detail the functional components of PDM and RSS systems.

HANDS-ON EXERCISE 7:

Make Motor and RSS recommendations based on single well architectures

-               Will be Supplied Equipment Quick reference guide, PF motor hand book, multiple well trajectories, and basic lithological in-formation to assess build rates.

Bit design, reamers,  rollers, Neyfor, etc (DTR – drilling tools and remedial group)- Overview of bit design and selection for clearing cuttings (steel bit), stability, build, etc.  Provide overview of common additional BHA components.

HANDS-ON EXERCISE 8:

• Practical on bit grading.

Putting it all together with BHA design – build a bha with consideration to dog leg capability, build tendencies, stabilization, survey points, and LWD needs.

HANDS-ON EXERCISE 9:

• Build a BHA exercise: provide well profile as well different equipment options steel bit, etc to achieve needs. 

Equipment/Props/Software:  Tool specifications,  Guide to stabilization, and LWD do’s and don’ts 

Drilling Mechanics  & Hydraulics –  This module will address stick slip, shocks, whirl and means to mitigate them.  Followed by hydraulic considerations to include cleaning and pressure drops with tools.

HANDS-ON EXERCISE 10:

• Mitigate stick slick through changing drilling parameters
• Mitigate shock through changing BHA design

HANDS-ON EXERCISE 11:

• Calculate required flow rates based on rate of flow and pressure drop of the BHA.