Table 3 Results of monitoring fractures with micro seismic.

From: New prediction method of horizontal principal stress of deep tight reservoirs

Well

J-10

J-13

J-18

J-27

J-171

J-30

J-22

Fracture height/m

49

58

51

56

53

76

57

Fracture length/m

236

251

318

269

388

231

257

Fracture direction/\(^\circ\)

\(\frac{141-163}{156}\)

\(\frac{143-159}{150}\)

\(\frac{139-158}{146}\)

\(\frac{140-159}{152}\)

\(\frac{144-168}{158}\)

\(\frac{141-170}{159}\)

\(\frac{135-167}{151}\)