Changes

==Wellsite data package==

==Wellsite data package==

A data package should be prepared for use on the wellsite containing all of the data needed for correlation and evaluation. This includes maps, offset well logs, the well prognosis, and any other data that the geologist believes may be useful. Only copies (not the originals) of these data should be taken to the field.

A data package should be prepared for use on the wellsite containing all of the data needed for correlation and evaluation. This includes maps, [[offset]] well logs, the well prognosis, and any other data that the geologist believes may be useful. Only copies (not the originals) of these data should be taken to the field.

==Well planning checklist==

==Well planning checklist==

===Drilling program===

===Drilling program===

*  Straight, slanted, or horizontal well

*  Straight, slanted, or [[Well types#Horizontal well|horizontal well]]

*  Anticipated total depth (TD) in measured depth (MD) and TVD (true vertical depth)

*  Anticipated total depth (TD) in measured depth (MD) and TVD (true vertical depth)

*  H₂S and other gases

*  H₂S and other gases

*  Casing points

*  Casing points

*  [[Drilling problems]]

*  [[Drilling problems]]

 

** Sloughing shales

<list-item>Sloughing shales</list-item><list-item>Swelling shales</list-item><list-item>Salt beds</list-item><list-item>Faults</list-item><list-item>High angle beds</list-item><list-item>Lost circulation zones (e.g., fractures, excessive mud weight)</list-item>

** Swelling shales

** Salt beds

** Faults

** High angle beds

** Lost circulation zones (e.g., fractures, excessive mud weight)

===Communications for operators and partners===

===Communications for operators and partners===

*  Mud logging

*  Mud logging

 

** Crew size and services to be provided

<list-item>Crew size and services to be provided</list-item><list-item>Number of sets of each type of sample -wet

** Number of sets of each type of sample

 

***wet

<list-item>- dry</list-item><list-item>- geochemical</list-item><list-item>- paleontological</list-item></list-item><list-item>Pressurized unit</list-item><list-item>Hot wire or flame ionization detection (FID) chromatograph</list-item><list-item>Bit dulling plot</list-item><list-item>Overpressure plot</list-item><list-item>[[Rate of penetration]] (ROP), weight on bit (WOB), pump pressure (PP), revolutions per minute (RPM), and bit data</list-item><list-item>Mud data</list-item><list-item>Pit volume monitors</list-item><list-item>Special analyses

 

***geochemical

<list-item>- ion tracing</list-item><list-item>- radioactive monitoring</list-item><list-item>- shale densities</list-item><list-item>- d and dc exponent</list-item><list-item>- hydrogen sulfide (H₂S) detectors</list-item></list-item><list-item>CRT displays on rig floor, company representative's office</list-item>

***paleontological

**Pressurized unit

** Hot wire or flame ionization detection (FID) chromatograph

** Bit dulling plot

** Overpressure plot

** [[Rate of penetration]] (ROP), weight on bit (WOB), pump pressure (PP), revolutions per minute (RPM), and bit data

** Mud data

** Pit volume monitors

** Special analyses

*** ion tracing

*** radioactive monitoring

*** shale densities

*** d and dc exponent

*** hydrogen sulfide (H₂S) detectors

** CRT displays on rig floor, company representative's office

*  Electric logging

*  Electric logging

 

** Big, regular, or slim hole tools

<list-item>Big, regular, or slim hole tools</list-item><list-item>Temperature requirements</list-item><list-item>Fresh, salt, or oil mud tools</list-item><list-item>Tool combinations and order of logging runs (usually gamma ray, deep resistivity, [[porosity]], sonic, pad-type resistivity, dipmeter, checkshot survey, and sidewall cores)</list-item><list-item>Backup tools</list-item><list-item>Calibration, both at surface (before and after logging) and downhole</list-item><list-item>Repeat and overlap sections</list-item><list-item>Scales</list-item><list-item>Check shot survey points (determined after first logging run)</list-item><list-item>Bottom hole temperature (BHT) with each tool</list-item><list-item>Maximum logging speeds</list-item><list-item>Magnetic tape requirements (e.g., 800 or 1600 bpi)</list-item><list-item>Display format</list-item>

** Temperature requirements

** Fresh, salt, or oil mud tools

** Tool combinations and order of logging runs (usually [[Basic open hole tools#Gamma ray|gamma ray]], deep resistivity, [[porosity]], sonic, pad-type resistivity, [[dipmeter]], checkshot survey, and sidewall cores)

** Backup tools

** Calibration, both at surface (before and after logging) and downhole

** Repeat and overlap sections

** Scales

** Check shot survey points (determined after first logging run)

** Bottom hole temperature (BHT) with each tool

** Maximum logging speeds

** Magnetic tape requirements (e.g., 800 or 1600 bpi)

** Display format

*  Fluid samples

*  Fluid samples

 

** [[Wireline formation testers|Repeat formation test (RFT)]] and drill stem test (DST)

<list-item>Repeat formation test (RFT) and drill stem test (DST)

*** Interval(s)

 

*** Packer seats

<list-item>- Interval(s)</list-item><list-item>- Packer seats</list-item><list-item>- Sampling method</list-item></list-item>

*** Sampling method

*  Coring

*  Coring

 

** Conventional, wireline, and/or sidewall

<list-item>Conventional, wireline, and/or sidewall

*** Formations automatically cored?

 

***Core on show?

<list-item>- Formations automatically cored?</list-item><list-item>- Core on show?</list-item><list-item>- [[Core handling]] procedures</list-item></list-item>

***[[Core handling]] procedures

===Data distribution===

===Data distribution===

*  Types of data

*  Types of data

 

** Drilling records (e.g., bit record, geolograph charts)

<list-item>Drilling records (e.g., bit record, geolograph charts)</list-item><list-item>Mudlogs and mudlog records</list-item><list-item>Electric logs</list-item><list-item>Core and/or cuttings (wet and/or dry)</list-item><list-item>Fluid samples</list-item><list-item>Pressure charts</list-item><list-item>Laboratory analyses

** Mudlogs and mudlog records

 

** Electric logs

<list-item>- cuttings</list-item><list-item>- cores</list-item><list-item>- biostratigraphic</list-item><list-item>- geochemical</list-item><list-item>- fluid properties</list-item></list-item>

** Core and/or cuttings (wet and/or dry)

** Fluid samples

** Pressure charts

** Laboratory analyses

*** cores

*** biostratigraphic

*** geochemical

*** fluid properties

*  Number of copies of each type of data for

*  Number of copies of each type of data for

 

** Division office

<list-item>Division office</list-item><list-item>Headquarters office</list-item><list-item>Partners</list-item><list-item>Federal and state agencies</list-item><list-item>Wellsite copies</list-item><list-item>Geologist and geophysicist</list-item><list-item>Drilling engineer</list-item><list-item>Reservoir engineer</list-item>

** Headquarters office

** Partners

** Federal and state agencies

** Wellsite copies

** Geologist and geophysicist

** Drilling engineer

** Reservoir engineer

===Sources of data for well planning===

===Sources of data for well planning===

*  Offset wells

*  Offset wells

 

** wireline logs

<list-item>wireline logs</list-item><list-item>mudlogs</list-item><list-item>daily drilling reports</list-item><list-item>velocity surveys</list-item><list-item>bit records</list-item><list-item>scout tickets</list-item><list-item>[[paleontology]] and geochemistry reports</list-item><list-item>production data</list-item>

** mudlogs

** daily drilling reports

** velocity surveys

** bit records

** [[scout ticket]]s

** [[paleontology]] and geochemistry reports

** production data

*  State agencies (e.g., Railroad Commission in Texas)

*  State agencies (e.g., Railroad Commission in Texas)

*  Industry libraries (e.g., Petroleum Information [PI], Dwights)

*  Industry libraries (e.g., Petroleum Information [PI], Dwights)

==See also==

==See also==

* [[Introduction to wellsite methods]]

* [[Introduction to wellsite methods]]

* [[Wellbore trajectory]]

* [[Wellbore trajectory]]

* [[Rig personnel]]

* [[Rig personnel]]

* [[Wellsite math]]

* [[Wellsite math]]

* [[Mudlogging: equipment, services, and personnel]]

* [[Mudlogging: Equipment, services, and personnel]]

* [[Core alteration and preservation]]

* [[Wellsite safety]]

* [[Wellsite safety]]

* [[Offshore rigs]]

* [[Offshore rigs]]

* [[Fishing]]

* [[Well types]]

* [[Mudlogging: Gas extraction and monitoring]]

==External links==

==External links==

[[Category:Wellsite methods]]

[[Category:Wellsite methods]]