neighbour gas drilling 25 years, page-55

123. What penetrations are achieved when perforating shot through casing at production zones?
same as a shot gun about 1 inch slugs
124. How far do the pellets (are the pellets) go into the formation?
thorugh the casing through the cement then 3-4 inches into the formation pending on formation hardness
126. What sort of hole sizes (pellet size)are created in the formations through the casing?
half to 1 inch holes
127. How far apart (vertically) can these production shots be fired?
every 6 inches up to 30 foot long
128. What sort of problems for fraccing Limstone (and sandstone) at such depths...I ssume they are more dense due to higher presures?
they are more dense due to weight of earth above, many factors heat, temp,porosity etc
129. Likelihood of wet gas at these depths, heats and pressures?
very lickely can produce formation water
130. Typical time for each DST?
6 to 8 hours
131. Can you perforate casing, run DST, then seal the casing off?
yes u can
Importance of gas composion? C1, C2...
not sure not a scientist just a driller