Table 2. Mudstone Thickness of the Pingdiquan Formation in the Dongdaohaizi Sag and Adjacent Areas.

area	well	formation	formation thickness (m)	gray-green mudstone thickness (m)	brown mudstone thickness (m)	dark mudstone thickness (m)
Dongdaohaizi sag	Dinan 1	P2p	592	0	0	262	44.3
	Dinan 2	P2p	769	0	16	413	53.7
	Dinan 3	P2p	645	0	6	283	43.9
	Dinan 7	P2p	286	0	9	226	79.0
	Dinan 8	P2p	640	0	75	237	37.0
Wucaiwan sag	Cai 46	P2p	570	0	13	265	46.5
Mosuowan uplift	Moshen 1	P2w	267	68	0	93	34.8
	Pen 8	P2w	39	0	14	9	23.1
	Shimo 1	P2p	455	0	8	280	61.5