Changes

{| class = "wikitable"

{| class = "wikitable"

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! Step

! Step || Action

! Action

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| 1

| 1 || Inspect the tool and check calibration before going in the hole.

| Inspect the tool and check calibration before going in the hole.

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| 2

| 2 || Run quartz and strain gauges simultaneously. Record both readings independently. Normalize to one another after completing the survey.

| Run quartz and strain gauges simultaneously. Record both readings independently. Normalize to one another after completing the survey.

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| 3

| 3 || Maintain a slight overflow of mud to keep the level in the borehole constant during the survey and to prevent mud hydrostatic pressure errors.

| Maintain a slight overflow of mud to keep the level in the borehole constant during the survey and to prevent mud hydrostatic pressure errors.

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| 4

| 4 || Take mud hydrostatic pressures while descending into the hole to give the instruments time to equilibrate to changing temperature and pressure and to provide a mud hydrostatic pressure profile.

| Take mud hydrostatic pressures while descending into the hole to give the instruments time to equilibrate to changing temperature and pressure and to provide a mud hydrostatic pressure profile.

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| 5

| 5 || Check for tool errors by calculating mud hydrostatic pressures at different depths from mud weight; check them against measured mud hydrostatic pressures at the same depths.

| Check for tool errors by calculating mud hydrostatic pressures at different depths from mud weight; check them against measured mud hydrostatic pressures at the same depths.

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|}